Fix syntax & update links to HTTPs (#524)

README.md

@@ -81,11 +81,11 @@
 Build automation.
 
 - [Apache Ant](https://ant.apache.org/) - Automation build tool, similar to make, a library and command-line tool whose mission is to drive processes described in build files as targets and extension points dependent upon each other. ([Source Code](https://github.com/apache/ant)) `Apache-2.0` `Java`
-- [Apache Maven](http://maven.apache.org/) - Build automation tool mainly for Java. A software project management and comprehension tool. Based on the concept of a project object model (POM), Maven can manage a project's build, reporting and documentation from a central piece of information. ([Source Code](https://github.com/apache/maven)) `Apache-2.0` `Java`
-- [Bazel](http://www.bazel.io/) - A fast, scalable, multi-language and extensible build system. Used by Google. ([Source Code](https://github.com/bazelbuild/bazel/)) `Apache-2.0` `Java`
+- [Apache Maven](https://maven.apache.org/) - Build automation tool mainly for Java. A software project management and comprehension tool. Based on the concept of a project object model (POM), Maven can manage a project's build, reporting and documentation from a central piece of information. ([Source Code](https://github.com/apache/maven)) `Apache-2.0` `Java`
+- [Bazel](https://www.bazel.io/) - A fast, scalable, multi-language and extensible build system. Used by Google. ([Source Code](https://github.com/bazelbuild/bazel/)) `Apache-2.0` `Java`
 - [Bolt](https://puppet.com/products/bolt) - You can use Bolt to run one-off tasks, scripts to automate the provisioning and management of some nodes, you can use Bolt to move a step beyond scripts, and make them shareable. ([Source Code](https://github.com/puppetlabs/bolt)) `Apache-2.0` `Ruby`
-- [GNU Make](http://www.gnu.org/software/make/) - The most popular automation build tool for many purposes, make is a tool which controls the generation of executables and other non-source files of a program from the program's source files. ([Source Code](https://git.savannah.gnu.org/cgit/make.git)) `GPL-3.0` `C`
-- [Gradle](http://gradle.org/) - Another build automation system. ([Source Code](https://github.com/gradle/gradle)) `Groovy/Java` `Apache-2.0`
+- [GNU Make](https://www.gnu.org/software/make/) - The most popular automation build tool for many purposes, make is a tool which controls the generation of executables and other non-source files of a program from the program's source files. ([Source Code](https://git.savannah.gnu.org/cgit/make.git)) `GPL-3.0` `C`
+- [Gradle](https://gradle.org/) - Another build automation system. ([Source Code](https://github.com/gradle/gradle)) `Groovy/Java` `Apache-2.0`
 - [Rake](https://ruby.github.io/rake/) - Build automation tool similar to Make, written in and extensible in Ruby. ([Source Code](https://github.com/ruby/rake)) `MIT` `Ruby`
 
 
@@ -135,8 +135,8 @@ Conversation-driven development and management.
 
 _See also: [/r/chatops](https://old.reddit.com/r/chatops)*
 
-- [Eggdrop](http://www.eggheads.org/) - The oldest Internet Relay Chat (IRC) bot still in active development. ([Source Code](https://github.com/eggheads/eggdrop)) `GPL-2.0` `C`
-- [Errbot](http://errbot.io/) - a plugin based chatbot designed to be easily deployable, extensible and maintainable. ([Source Code](https://github.com/errbotio/errbot)) `GPL-3.0` `Python`
+- [Eggdrop](https://www.eggheads.org/) - The oldest Internet Relay Chat (IRC) bot still in active development. ([Source Code](https://github.com/eggheads/eggdrop)) `GPL-2.0` `C`
+- [Errbot](https://errbot.io/) - a plugin based chatbot designed to be easily deployable, extensible and maintainable. ([Source Code](https://github.com/errbotio/errbot)) `GPL-3.0` `Python`
 - [Hubot](https://hubot.github.com/) - A customizable, life embetterment robot. ([Source Code](https://github.com/hubotio/hubot)) `MIT` `Nodejs`
 
 
@@ -157,7 +157,7 @@ _Related: [IT Asset Management](#it-asset-management)_
 
 [Disk cloning](https://en.wikipedia.org/wiki/Disk_cloning) software.
 
-- [Clonezilla](http://clonezilla.org/) - Partition and disk imaging/cloning program. ([Source Code](https://clonezilla.org/downloads/src/)) `GPL-2.0/Other` `Perl/Shell/Other`
+- [Clonezilla](https://clonezilla.org/) - Partition and disk imaging/cloning program. ([Source Code](https://clonezilla.org/downloads/src/)) `GPL-2.0/Other` `Perl/Shell/Other`
 - [Fog](https://www.fogproject.org/) - Cloning/imaging solution/rescue suite. ([Source Code](https://github.com/FOGProject/fogproject)) `GPL-3.0` `PHP/Shell`
 
 
@@ -169,11 +169,11 @@ _Related: [IT Asset Management](#it-asset-management)_
 
 **Please visit [Cloud Native Software Landscape](https://landscape.cncf.io/card-mode?license=open-source&grouping=category)**
 
-- [CloudSlang](http://www.cloudslang.io/) - Flow-based orchestration tool for managing deployed applications, with Docker capabilities. ([Source Code](https://github.com/CloudSlang/score)) `Apache-2.0` `Java`
-- [CloudStack](http://cloudstack.apache.org/) - Cloud computing software for creating, managing, and deploying infrastructure cloud services. ([Source Code](https://github.com/apache/cloudstack)) `Apache-2.0` `Java/Python`
-- [Cobbler](http://cobbler.github.io/) - Cobbler is a Linux installation server that allows for rapid setup of network installation environments. ([Source Code](https://github.com/cobbler/cobbler)) `GPL-2.0` `Python`
+- [CloudSlang](https://www.cloudslang.io/) - Flow-based orchestration tool for managing deployed applications, with Docker capabilities. ([Source Code](https://github.com/CloudSlang/score)) `Apache-2.0` `Java`
+- [CloudStack](https://cloudstack.apache.org/) - Cloud computing software for creating, managing, and deploying infrastructure cloud services. ([Source Code](https://github.com/apache/cloudstack)) `Apache-2.0` `Java/Python`
+- [Cobbler](https://cobbler.github.io/) - Cobbler is a Linux installation server that allows for rapid setup of network installation environments. ([Source Code](https://github.com/cobbler/cobbler)) `GPL-2.0` `Python`
 - [Genesis](https://github.com/starkandwayne/genesis) - A template framework for multi-environment BOSH deployments. `MIT` `Perl`
-- [Overcast](http://andrewchilds.github.io/overcast/) - Deploy VMs across different cloud providers, and run commands and scripts across any or all of them in parallel via SSH. ([Source Code](https://github.com/andrewchilds/overcast)) `MIT` `Nodejs`
+- [Overcast](https://andrewchilds.github.io/overcast/) - Deploy VMs across different cloud providers, and run commands and scripts across any or all of them in parallel via SSH. ([Source Code](https://github.com/andrewchilds/overcast)) `MIT` `Nodejs`
 
 
 ### Code Review
@@ -193,9 +193,9 @@ Configuration management database (CMDB) software.
 
 _Related: [IT Asset Management](#it-asset-management)_
 
-- [Collins](http://tumblr.github.io/collins/) - At Tumblr, it's the infrastructure source of truth and knowledge. ([Source Code](https://github.com/tumblr/collins)) `Apache-2.0` `Docker/Scala`
-- [i-doit](http://www.i-doit.org/) - IT Documentation and CMDB. `AGPL-3.0` `PHP`
-- [iTop](http://www.combodo.com/itop-193) - Complete ITIL web based service management tool. ([Source Code](https://sourceforge.net/projects/itop/files/)) `AGPL-3.0` `PHP`
+- [Collins](https://tumblr.github.io/collins/) - At Tumblr, it's the infrastructure source of truth and knowledge. ([Source Code](https://github.com/tumblr/collins)) `Apache-2.0` `Docker/Scala`
+- [i-doit](https://www.i-doit.org/) - IT Documentation and CMDB. `AGPL-3.0` `PHP`
+- [iTop](https://www.combodo.com/itop-193) - Complete ITIL web based service management tool. ([Source Code](https://sourceforge.net/projects/itop/files/)) `AGPL-3.0` `PHP`
 - [netbox](https://netbox.dev/) - IP address management (IPAM) and data center infrastructure management (DCIM) tool. ([Demo](https://demo.netbox.dev/), [Source Code](https://github.com/netbox-community/netbox)) `Apache-2.0` `Python`
 
 
@@ -218,20 +218,20 @@ _Related: [IT Asset Management](#it-asset-management)_
 
 [Continuous integration](https://en.wikipedia.org/wiki/Continuous_integration)/[deployment](https://en.wikipedia.org/wiki/Continuous_deployment) software.
 
-- [Buildbot](http://buildbot.net/) - Python-based toolkit for continuous integration. ([Source Code](https://github.com/buildbot/buildbot)) `GPL-2.0` `Python`
+- [Buildbot](https://buildbot.net/) - Python-based toolkit for continuous integration. ([Source Code](https://github.com/buildbot/buildbot)) `GPL-2.0` `Python`
 - [CapsuleCD](https://analogj.github.io/capsulecd-slides/) - CD script for automating package/library releases (npm, cookbooks, gems, pip, jars, etc). ([Source Code](https://github.com/AnalogJ/capsulecd)) `MIT` `Go`
 - [CDS](https://ovh.github.io/cds/) - Enterprise-Grade Continuous Delivery & DevOps Automation Open Source Platform. ([Source Code](https://github.com/ovh/cds)) `BSD-3-Clause` `Go`
 - [Concourse](https://concourse-ci.org/) - Concourse is a CI tool that treats pipelines as first class objects and containerizes every step along the way. ([Demo](https://ci.concourse-ci.org/), [Source Code](https://github.com/concourse/concourse)) `Apache-2.0` `Go`
 - [drone](https://drone.io/) - Drone is a Continuous Delivery platform built on Docker, written in Go. ([Source Code](https://github.com/drone/drone)) `Apache-2.0` `Go`
-- [Factor](http://www.factor.io/) - Programmatically define and run workflows to connect configuration management, source code management, build, continuous integration, continuous deployment and communication tools. ([Source Code](https://github.com/factor-io/factor)) `MIT` `Ruby`
+- [Factor](https://www.factor.io/) - Programmatically define and run workflows to connect configuration management, source code management, build, continuous integration, continuous deployment and communication tools. ([Source Code](https://github.com/factor-io/factor)) `MIT` `Ruby`
 - [GitLab CI](https://about.gitlab.com/gitlab-ci/) - Gitlab's built-in, full-featured CI/CD solution. ([Source Code](https://gitlab.com/gitlab-org/gitlab-ce)) `MIT` `Ruby`
-- [GoCD](http://www.go.cd/) - Continuous delivery server. ([Source Code](https://github.com/gocd/gocd)) `Apache-2.0` `Java/Ruby`
+- [GoCD](https://www.go.cd/) - Continuous delivery server. ([Source Code](https://github.com/gocd/gocd)) `Apache-2.0` `Java/Ruby`
 - [GolangCI](https://golangci.com/) - Open Source automated code review service for Go integrated with GitHub pull requests. ([Source Code](https://github.com/golangci/golangci)) `AGPL-3.0` `Go`
 - [Jenkins](https://jenkins-ci.org/) - Continuous Integration Server. ([Source Code](https://github.com/jenkinsci/jenkins/)) `MIT` `Java`
-- [Laminar](http://laminar.ohwg.net) - Fast, lightweight, simple and flexible Continuous Integration. ([Source Code](https://github.com/ohwgiles/laminar)) `GPL-3.0` `C++`
+- [Laminar](https://laminar.ohwg.net) - Fast, lightweight, simple and flexible Continuous Integration. ([Source Code](https://github.com/ohwgiles/laminar)) `GPL-3.0` `C++`
 - [PHP Censor](https://github.com/php-censor/php-censor) - Open source self-hosted continuous integration server for PHP projects. `BSD-2-Clause` `PHP`
 - [PHPCI](https://www.phptesting.org/) - Free and open source continuous integration specifically designed for PHP. ([Source Code](https://github.com/block8/phpci)) `BSD-2-Clause` `PHP`
-- [Strider](http://strider-cd.github.io/) - Open Source Continuous Deployment / Continuous Integration platform. ([Source Code](https://github.com/Strider-CD/strider)) `MIT` `Nodejs`
+- [Strider](https://strider-cd.github.io/) - Open Source Continuous Deployment / Continuous Integration platform. ([Source Code](https://github.com/Strider-CD/strider)) `MIT` `Nodejs`
 - [werf](https://werf.io/) - Open Source CI/CD tool for building Docker images and deploying to Kubernetes via GitOps. ([Source Code](https://github.com/werf/werf)) `Apache-2.0` `Go`
 - [Woodpecker](https://woodpecker-ci.org/) - Community fork of Drone that uses Docker containers. ([Source Code](https://github.com/woodpecker-ci/woodpecker)) `Apache-2.0` `Go`
 
@@ -242,14 +242,14 @@ _Related: [IT Asset Management](#it-asset-management)_
 
 Web hosting and server or service control panels.
 
-- [Ajenti](http://ajenti.org/) - Control panel for Linux and BSD. ([Source Code](https://github.com/ajenti/ajenti)) `MIT` `Python/Shell`
-- [Cockpit](http://cockpit-project.org/) - web-based graphical interface for servers. ([Source Code](https://github.com/cockpit-project/cockpit)) `LGPL-2.1` `C`
+- [Ajenti](https://ajenti.org/) - Control panel for Linux and BSD. ([Source Code](https://github.com/ajenti/ajenti)) `MIT` `Python/Shell`
+- [Cockpit](https://cockpit-project.org/) - web-based graphical interface for servers. ([Source Code](https://github.com/cockpit-project/cockpit)) `LGPL-2.1` `C`
 - [Froxlor](https://froxlor.org/) - Lightweight server management software with Nginx and PHP-FPM support. ([Source Code](https://github.com/Froxlor/Froxlor/)) `GPL-2.0` `PHP`
-- [ISPConfig](http://www.ispconfig.org) - Manage Linux servers directly through your browser. ([Source Code](https://git.ispconfig.org/ispconfig/ispconfig3)) `BSD-3-Clause` `PHP`
-- [Sentora](http://sentora.org/) - Open-Source Web hosting control panel for Linux, BSD (fork of ZPanel). ([Source Code](https://github.com/sentora/sentora-core)) `GPL-3.0` `PHP`
-- [VestaCP](http://vestacp.com/) - Open-Source hosting control panel. ([Source Code](https://github.com/serghey-rodin/vesta)) `GPL-3.0` `PHP/Shell/Other`
-- [Virtualmin](http://www.virtualmin.com/) - Powerful and flexible web hosting control panel for Linux and BSD systems. ([Source Code](https://github.com/virtualmin)) `GPL-3.0` `Shell/Perl/Other`
-- [Webmin](http://www.webmin.com/) - Web-based interface for system administration for Unix. ([Source Code](https://github.com/webmin/webmin)) `BSD-3-Clause` `Perl`
+- [ISPConfig](https://www.ispconfig.org) - Manage Linux servers directly through your browser. ([Source Code](https://git.ispconfig.org/ispconfig/ispconfig3)) `BSD-3-Clause` `PHP`
+- [Sentora](https://sentora.org/) - Open-Source Web hosting control panel for Linux, BSD (fork of ZPanel). ([Source Code](https://github.com/sentora/sentora-core)) `GPL-3.0` `PHP`
+- [VestaCP](https://vestacp.com/) - Open-Source hosting control panel. ([Source Code](https://github.com/serghey-rodin/vesta)) `GPL-3.0` `PHP/Shell/Other`
+- [Virtualmin](https://www.virtualmin.com/) - Powerful and flexible web hosting control panel for Linux and BSD systems. ([Source Code](https://github.com/virtualmin)) `GPL-3.0` `Shell/Perl/Other`
+- [Webmin](https://www.webmin.com/) - Web-based interface for system administration for Unix. ([Source Code](https://github.com/webmin/webmin)) `BSD-3-Clause` `Perl`
 
 
 ### Databases
@@ -269,8 +269,8 @@ _See also: [awesome-selfhosted/Database Management](https://github.com/awesome-s
 
 Tools and scripts to support deployments to your servers.
 
-- [Capistrano](http://capistranorb.com/) - Deploy your application to any number of machines simultaneously, in sequence or as a rolling set via SSH (rake based). ([Source Code](https://github.com/capistrano/capistrano)) `MIT` `Ruby`
-- [Fabric](http://www.fabfile.org/) - Python library and cli tool for streamlining the use of SSH for application deployment or systems administration tasks. ([Source Code](https://github.com/fabric/fabric)) `BSD-2-Clause` `Python`
+- [Capistrano](https://capistranorb.com/) - Deploy your application to any number of machines simultaneously, in sequence or as a rolling set via SSH (rake based). ([Source Code](https://github.com/capistrano/capistrano)) `MIT` `Ruby`
+- [Fabric](https://www.fabfile.org/) - Python library and cli tool for streamlining the use of SSH for application deployment or systems administration tasks. ([Source Code](https://github.com/fabric/fabric)) `BSD-2-Clause` `Python`
 - [Mina](http://nadarei.co/mina/) - Really fast deployer and server automation tool (rake based). ([Source Code](https://github.com/mina-deploy/mina)) `MIT` `Ruby`
 - [munki](https://www.munki.org/munki/) - Webserver-based repository of packages and package metadata, that allows macOS administrators to manage software installs. ([Source Code](https://github.com/munki/munki)) `Apache-2.0` `Python`
 - [Vlad the Deployer](https://github.com/seattlerb/vlad) - Deployment automation (rake based). `MIT` `Ruby`
@@ -325,7 +325,7 @@ _Related: [DNS - Control Panels & Domain Management](#dns---control-panels--doma
 
 - [Bind](https://www.isc.org/bind/) - Versatile, classic, complete name server software. ([Source Code](https://gitlab.isc.org/isc-projects/bind9)) `MPL-2.0` `C`
 - [CoreDNS](https://coredns.io/) - Flexible DNS server. ([Source Code](https://github.com/coredns/coredns)) `Apache-2.0` `Go`
-- [djbdns](http://cr.yp.to/djbdns.html) - A collection of DNS applications, including tinydns. ([Source Code](https://salsa.debian.org/debian/djbdns)) `Public Domain` `C`
+- [djbdns](https://cr.yp.to/djbdns.html) - A collection of DNS applications, including tinydns. ([Source Code](https://salsa.debian.org/debian/djbdns)) `Public Domain` `C`
 - [dnsmasq](https://www.thekelleys.org.uk/dnsmasq/doc.html) - Provides network infrastructure for small networks: DNS, DHCP, router advertisement and network boot. ([Source Code](https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=tree)) `GPL-2.0` `C`
 - [Knot](https://www.knot-dns.cz/) - High performance authoritative-only DNS server. ([Source Code](https://gitlab.nic.cz/knot/knot-dns)) `GPL-3.0` `C`
 - [NSD](https://www.nlnetlabs.nl/projects/nsd/about/) - Authoritative DNS name server developed speed, reliability, stability and security. ([Source Code](https://github.com/NLnetLabs/nsd)) `BSD-3-Clause` `C`
@@ -361,19 +361,19 @@ _Related: [DNS - Servers](#dns---servers)_
 Open-source code editors.
 
 - [Atom Community](https://github.com/atom-community/atom) - A fork of [atom](https://github.com/atom/atom) A hackable text editor from Github. `MIT` `JavaScript`
-- [Brackets](http://brackets.io/) - Code editor for web designers and front-end developers. ([Source Code](https://github.com/brackets-cont/brackets)) `MIT` `JavaScript`
-- [Eclipse](http://www.eclipse.org/) - IDE written in Java with an extensible plug-in system. ([Source Code](https://git.eclipse.org/c/)) `EPL-1.0` `Java`
-- [Geany](http://www.geany.org/) - GTK2 text editor. ([Source Code](https://github.com/geany/geany)) `GPL-2.0` `C/C++`
-- [GNU Emacs](http://www.gnu.org/software/emacs/) - An extensible, customizable text editor-and more. ([Source Code](https://github.com/emacs-mirror/emacs)) `GPL-3.0` `C`
+- [Brackets](https://brackets.io/) - Code editor for web designers and front-end developers. ([Source Code](https://github.com/brackets-cont/brackets)) `MIT` `JavaScript`
+- [Eclipse](https://www.eclipse.org/) - IDE written in Java with an extensible plug-in system. ([Source Code](https://git.eclipse.org/c/)) `EPL-1.0` `Java`
+- [Geany](https://www.geany.org/) - GTK2 text editor. ([Source Code](https://github.com/geany/geany)) `GPL-2.0` `C/C++`
+- [GNU Emacs](https://www.gnu.org/software/emacs/) - An extensible, customizable text editor-and more. ([Source Code](https://github.com/emacs-mirror/emacs)) `GPL-3.0` `C`
 - [Haroopad](http://pad.haroopress.com/) - Markdown editor with live preview. ([Source Code](https://github.com/rhiokim/haroopad)) `GLP-3.0` `JavaScript`
 - [ICEcoder](https://icecoder.net/) - Code editor awesomeness, built with common web languages. ([Demo](http://demo.icecoder.net), [Source Code](https://github.com/icecoder/ICEcoder)) `MIT` `PHP`
 - [jotgit](https://github.com/jdleesmiller/jotgit) - Git-backed real-time collaborative code editing. `MIT` `Nodejs`
 - [KDevelop](https://www.kdevelop.org/) - IDE by the people behind KDE. ([Source Code](https://invent.kde.org/kdevelop/kdevelop)) `GFDL-1.2` `C++`
 - [Micro](https://micro-editor.github.io/) - A modern and intuitive terminal-based text editor. ([Source Code](https://github.com/zyedidia/micro)) `MIT` `Go`
-- [Nano](http://nano-editor.org) - Easy to use, customizable text editor. ([Source Code](https://git.savannah.gnu.org/cgit/nano.git/tree/)) `GPL-3.0` `C`
+- [Nano](https://nano-editor.org) - Easy to use, customizable text editor. ([Source Code](https://git.savannah.gnu.org/cgit/nano.git/tree/)) `GPL-3.0` `C`
 - [Notepad++](https://notepad-plus-plus.org/) - GPLv2 multi-language editor with syntax highlighting for Windows. ([Source Code](https://github.com/notepad-plus-plus/notepad-plus-plus)) `GPL-2.0` `C++`
 - [TextMate](https://macromates.com/) - A graphical text editor for OS X. ([Source Code](https://github.com/textmate/textmate/)) `GPL-3.0` `C++`
-- [Vim](http://www.vim.org) - A highly configurable text editor built to enable efficient editing. ([Source Code](https://github.com/vim/vim)) `Vim` `C`
+- [Vim](https://www.vim.org) - A highly configurable text editor built to enable efficient editing. ([Source Code](https://github.com/vim/vim)) `Vim` `C`
 - [VSCodium](https://vscodium.com/) - An open source cross-platform extensible code editor based on [VS Code by Microsoft](https://code.visualstudio.com/) removing their non-free additions. ([Source Code](https://github.com/VSCodium/vscodium)) `MIT` `TypeScript`
 
 
@@ -437,8 +437,8 @@ IT [asset management](https://en.wikipedia.org/wiki/Asset_management) software.
 
 - [GLPI](https://www.glpi-project.org/) - Information Resource-Manager with an additional Administration Interface. ([Source Code](https://github.com/glpi-project/glpi)) `GPL-3.0` `PHP`
 - [OCS Inventory NG](https://ocsinventory-ng.org/) - Asset management and deployment solution for all devices in your IT Department. ([Source Code](https://github.com/OCSInventory-NG)) `GPL-2.0` `PHP/Perl`
-- [OPSI](http://www.opsi.org) - Hardware and software inventory, client management, deployment, and patching for Linux and Windows. ([Source Code](https://github.com/opsi-org/)) `GPL-3.0/AGPL-3.0` `OVF/Python`
-- [RackTables](http://racktables.org/) - Datacenter and server room asset management like document hardware assets, network addresses, space in racks, networks configuration. ([Source Code](https://github.com/RackTables/racktables), [Demo](https://www.racktables.org/demo.php)) `GPL-2.0` `PHP`
+- [OPSI](https://www.opsi.org) - Hardware and software inventory, client management, deployment, and patching for Linux and Windows. ([Source Code](https://github.com/opsi-org/)) `GPL-3.0/AGPL-3.0` `OVF/Python`
+- [RackTables](https://racktables.org/) - Datacenter and server room asset management like document hardware assets, network addresses, space in racks, networks configuration. ([Source Code](https://github.com/RackTables/racktables), [Demo](https://www.racktables.org/demo.php)) `GPL-2.0` `PHP`
 - [Ralph](https://ralph.allegro.tech/) - Asset management, DCIM and CMDB system for large Data Centers as well as smaller LAN networks. ([Source Code](https://github.com/allegro/ralph), [Demo](https://github.com/allegro/ralph#live-demo)) `Apache-2.0` `Python/Docker`
 - [Snipe IT](https://snipeitapp.com/) - Asset & license management software. ([Source Code](https://github.com/snipe/snipe-it)) `AGPL-3.0` `PHP`
 
@@ -465,7 +465,7 @@ An [email client](https://en.wikipedia.org/wiki/Email_client), email reader or,
 - [Claws Mail](http://www.claws-mail.org/) - Old school email client (and news reader), based on GTK+. ([Source Code](https://git.claws-mail.org/?p=claws.git;a=tree)) `GPL-3.0` `C`
 - [ImapSync](http://imapsync.lamiral.info/) - Simple IMAP migration tool for copying mailboxes to other servers. ([Source Code](https://github.com/imapsync/imapsync)) `NLPL` `Perl`
 - [Mutt](http://www.mutt.org/) - Small but very powerful text-based mail client. ([Source Code](https://gitlab.com/muttmua/mutt)) `GPL-2.0` `C`
-- [Sylpheed](http://sylpheed.sraoss.jp/en/) - Still developed predecessor to Claws Mail, lightweight mail client. ([Source Code](https://github.com/sylpheed-mail/sylpheed)) `GPL-2.0` `C`
+- [Sylpheed](https://sylpheed.sraoss.jp/en/) - Still developed predecessor to Claws Mail, lightweight mail client. ([Source Code](https://github.com/sylpheed-mail/sylpheed)) `GPL-2.0` `C`
 - [Thunderbird](https://www.thunderbird.net/) - Free email application that's easy to set up and customize. ([Source Code](https://hg.mozilla.org/comm-central/file)) `MPL-2.0` `C/C++`
 
 
@@ -480,21 +480,21 @@ _Related: [Metrics & Metric Collection](#metrics--metric-collection)_
 - [Adagios](http://adagios.org/) - Web based Nagios interface for configuration and monitoring (replacement to the standard interface), and a REST interface. ([Source Code](https://github.com/opinkerfi/adagios)) `AGPL-3.0` `Docker/Python`
 - [Alerta](https://alerta.io/) - Distributed, scalable and flexible monitoring system. ([Source Code](https://github.com/alerta/alerta)) `Apache-2.0` `Python`
 - [Bloonix](https://bloonix-monitoring.org/) - Bloonix is a monitoring solution that helps businesses to ensure high availability and performance. ([Source Code](https://github.com/bloonix)) `GPL-3.0` `Perl`
-- [Bosun](http://bosun.org/) - Monitoring and alerting system by Stack Exchange. ([Source Code](https://github.com/bosun-monitor/bosun)) `MIT` `Go`
-- [Cabot](http://cabotapp.com/) - Monitoring and alerts, similar to PagerDuty. ([Source Code](https://github.com/arachnys/cabot)) `MIT` `Python`
-- [Cacti](http://www.cacti.net) - Web-based network monitoring and graphing tool. ([Source Code](https://github.com/Cacti/cacti)) `GPL-2.0` `PHP`
+- [Bosun](https://bosun.org/) - Monitoring and alerting system by Stack Exchange. ([Source Code](https://github.com/bosun-monitor/bosun)) `MIT` `Go`
+- [Cabot](https://cabotapp.com/) - Monitoring and alerts, similar to PagerDuty. ([Source Code](https://github.com/arachnys/cabot)) `MIT` `Python`
+- [Cacti](https://www.cacti.net) - Web-based network monitoring and graphing tool. ([Source Code](https://github.com/Cacti/cacti)) `GPL-2.0` `PHP`
 - [cadvisor](https://github.com/google/cadvisor) - Analyzes resource usage and performance characteristics of running containers. ([Source Code](https://github.com/google/cadvisor)) `Apache-2.0` `Go`
 - [checkmk](https://checkmk.com/) - Comprehensive solution for monitoring of applications, servers, and networks. ([Source Code](https://github.com/Checkmk/checkmk)) `GPL-2.0` `Python/PHP`
 - [dashdot](https://github.com/MauriceNino/dashdot) - A simple, modern server dashboard for smaller private servers. ([Demo](https://dash.mauz.dev/)) `MIT` `Nodejs/Docker`
 - [EdMon](https://github.com/Edraens/EdMon) - A command-line monitoring application helping you to check that your hosts and services are available, with notifications support. `MIT` `Java`
-- [eZ Server Monitor](http://www.ezservermonitor.com) - A lightweight and simple dashboard monitor for Linux, available in Web and Bash application. ([Source Code](https://github.com/shevabam/ezservermonitor-web)) `GPL-3.0` `PHP/Shell`
+- [eZ Server Monitor](https://www.ezservermonitor.com) - A lightweight and simple dashboard monitor for Linux, available in Web and Bash application. ([Source Code](https://github.com/shevabam/ezservermonitor-web)) `GPL-3.0` `PHP/Shell`
 - [Healthchecks](https://healthchecks.io/docs/self_hosted/) - Monitoring for cron jobs, background services and scheduled tasks. ([Source Code](https://github.com/healthchecks/healthchecks)) `BSD-3-Clause` `Python`
 - [Icinga](https://www.icinga.com/) - Nagios fork that has since lapped nagios several times. Comes with the possibility of clustered monitoring. ([Source Code](https://github.com/Icinga/icinga2)) `GPL-2.0` `C++`
-- [LibreNMS](http://www.librenms.org) - Fully featured network monitoring system that provides a wealth of features and device support. ([Source Code](https://github.com/librenms/librenms)) `GPL-3.0` `PHP`
+- [LibreNMS](https://www.librenms.org) - Fully featured network monitoring system that provides a wealth of features and device support. ([Source Code](https://github.com/librenms/librenms)) `GPL-3.0` `PHP`
 - [Linux Dash](https://github.com/afaqurk/linux-dash) - A low-overhead monitoring web dashboard for a GNU/Linux machine. `MIT` `Nodejs/Go/Python/PHP`
-- [Monit](http://mmonit.com/monit/#home) - Small utility for managing and monitoring Unix systems. ([Source Code](https://bitbucket.org/tildeslash/monit/src/master/)) `AGPL-3.0` `C`
-- [Munin](http://munin-monitoring.org/) - Networked resource monitoring tool. ([Source Code](https://github.com/munin-monitoring/munin)) `GPL-2.0` `Perl/Shell`
-- [Naemon](http://www.naemon.org/) - Network monitoring tool based on the Nagios 4 core with performance enhancements and new features. ([Source Code](https://github.com/naemon/naemon-core)) `GPL-2.0` `C`
+- [Monit](https://mmonit.com/monit/#home) - Small utility for managing and monitoring Unix systems. ([Source Code](https://bitbucket.org/tildeslash/monit/src/master/)) `AGPL-3.0` `C`
+- [Munin](https://munin-monitoring.org/) - Networked resource monitoring tool. ([Source Code](https://github.com/munin-monitoring/munin)) `GPL-2.0` `Perl/Shell`
+- [Naemon](https://www.naemon.org/) - Network monitoring tool based on the Nagios 4 core with performance enhancements and new features. ([Source Code](https://github.com/naemon/naemon-core)) `GPL-2.0` `C`
 - [Nagios](https://www.nagios.org/) - Computer system, network and infrastructure monitoring software application. ([Source Code](https://github.com/NagiosEnterprises/nagioscore)) `GPL-2.0` `C`
 - [Netdata](https://www.netdata.cloud/) - Distributed, real-time, performance and health monitoring for systems and applications. Runs on Linux, FreeBSD, and MacOS. ([Source Code](https://github.com/netdata/netdata)) `GPL-3.0` `C`
 - [NetXMS](https://www.netxms.org/) - Open Source network and infrastructure monitoring and management. ([Source Code](https://github.com/netxms/netxms)) `LGPL-3.0/GPL-3.0` `Java/C++/C`
@@ -503,14 +503,14 @@ _Related: [Metrics & Metric Collection](#metrics--metric-collection)_
 - [PHP Server Monitor](https://www.phpservermonitor.org/) - Open source tool to monitor your servers and websites. ([Source Code](https://github.com/phpservermon/phpservermon)) `GPL-3.0` `PHP`
 - [PhpSysInfo](https://phpsysinfo.github.io/phpsysinfo/) - A customizable PHP script that displays information about your system nicely. ([Source Code](https://github.com/phpsysinfo/phpsysinfo)) `GPL-2.0` `PHP`
 - [Prometheus](https://prometheus.io/) - Service monitoring system and time series database. ([Source Code](https://github.com/prometheus/prometheus)) `Apache-2.0` `Go`
-- [Riemann](http://riemann.io/) - Flexible and fast events processor allowing complex events/metrics analysis. ([Source Code](https://github.com/riemann/riemann)) `EPL-1.0` `Java`
+- [Riemann](https://riemann.io/) - Flexible and fast events processor allowing complex events/metrics analysis. ([Source Code](https://github.com/riemann/riemann)) `EPL-1.0` `Java`
 - [rtop](https://github.com/rapidloop/rtop) - Interactive, remote system monitoring tool based on SSH. ([Source Code](https://github.com/rapidloop/rtop)) `MIT` `Go`
 - [ruptime](https://github.com/alexmyczko/ruptime) - Classic system status server. ([Source Code](https://github.com/alexmyczko/ruptime)) `AGPL-3.0` `Shell`
 - [Scrutiny](https://github.com/AnalogJ/scrutiny) - Web UI for hard drive S.M.A.R.T monitoring, historical trends & real-world failure thresholds. `MIT` `Go`
 - [Sensu](https://sensu.io/) - Monitoring tool for ephemeral infrastructure and distributed applications. ([Source Code](https://github.com/sensu/sensu-go)) `MIT` `Go`
 - [Status](https://github.com/dani3l0/Status) - Simple and lightweight system monitoring tool for small homeservers with a pleasant web interface. ([Demo](https://status-ksk5.onrender.com/)) `MIT` `Python`
-- [Thruk](http://www.thruk.org/) - Multibackend monitoring web interface with support for Naemon, Nagios, Icinga and Shinken. ([Source Code](https://github.com/sni/Thruk)) `GPL-1.0` `Perl`
-- [Zabbix](http://www.zabbix.com/) - Enterprise-class software for monitoring of networks and applications. ([Source Code](https://git.zabbix.com/projects/ZBX/repos/zabbix/browse)) `GPL-2.0` `C`
+- [Thruk](https://www.thruk.org/) - Multibackend monitoring web interface with support for Naemon, Nagios, Icinga and Shinken. ([Source Code](https://github.com/sni/Thruk)) `GPL-1.0` `Perl`
+- [Zabbix](https://www.zabbix.com/) - Enterprise-class software for monitoring of networks and applications. ([Source Code](https://git.zabbix.com/projects/ZBX/repos/zabbix/browse)) `GPL-2.0` `C`
 
 
 ### Status Pages
@@ -550,9 +550,9 @@ Network configuration management tools.
 - [GNS3](https://www.gns3.com/) - Graphical network simulator that provides a variety of virtual appliances. ([Source Code](https://github.com/GNS3/gns3-gui/)) `GPL-3.0` `Python`
 - [OpenWISP](https://openwisp.org/) - Open Source Network Management System for OpenWRT based routers and access points. ([Demo](https://openwisp.org/demo.html), [Source Code](https://github.com/openwisp)) `GPL-3.0` `Python` 
 - [Oxidized](https://github.com/ytti/oxidized) - Network device configuration backup tool. `Apache-2.0` `Ruby`
-- [phpIPAM](http://phpipam.net/) - Open source IP address management with PowerDNS integration. ([Source Code](https://github.com/phpipam/phpipam)) `GPL-3.0` `PHP`
-- [RANCID](http://www.shrubbery.net/rancid/) - Monitor network devices configuration and maintain history of changes. ([Source Code](https://github.com/haussli/rancid)) `BSD-3-Clause` `Perl/Shell`
-- [rConfig](http://www.rconfig.com/) - Network device configuration management tool. ([Source Code](https://github.com/rconfig/rconfig)) `GPL-3.0` `PHP`
+- [phpIPAM](https://phpipam.net/) - Open source IP address management with PowerDNS integration. ([Source Code](https://github.com/phpipam/phpipam)) `GPL-3.0` `PHP`
+- [RANCID](https://www.shrubbery.net/rancid/) - Monitor network devices configuration and maintain history of changes. ([Source Code](https://github.com/haussli/rancid)) `BSD-3-Clause` `Perl/Shell`
+- [rConfig](https://www.rconfig.com/) - Network device configuration management tool. ([Source Code](https://github.com/rconfig/rconfig)) `GPL-3.0` `PHP`
 
 
 
@@ -562,7 +562,7 @@ Network configuration management tools.
 
 Newsletter software.
 
-- [DadaMail](http://dadamailproject.com/) - Mailing List Manager, written in Perl. ([Source Code](https://sourceforge.net/projects/dadamail/files/)) `GPL-2.0` `Perl`
+- [DadaMail](https://dadamailproject.com/) - Mailing List Manager, written in Perl. ([Source Code](https://sourceforge.net/projects/dadamail/files/)) `GPL-2.0` `Perl`
 - [phpList](https://www.phplist.org/) - Newsletter and email marketing software. ([Source Code](https://github.com/phpList/phplist3)) `AGPL-3.0` `PHP`
 
 
@@ -635,7 +635,7 @@ Software for management of [router](https://en.wikipedia.org/wiki/Router_(comput
 
 - [Consul](https://www.consul.io/) - Consul is a tool for service discovery, monitoring and configuration. ([Source Code](https://github.com/hashicorp/consul)) `MPL-2.0` `Go`
 - [etcd](https://etcd.io/) - distributed K/V-Store, authenticating via SSL PKI and a REST HTTP Api for shared configuration and service discovery. ([Source Code](https://github.com/coreos/etcd)) `Apache-2.0` `Go`
-- [ZooKeeper](http://zookeeper.apache.org/) - ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. ([Source Code](https://github.com/apache/zookeeper)) `Apache-2.0` `Java/C++`
+- [ZooKeeper](https://zookeeper.apache.org/) - ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. ([Source Code](https://github.com/apache/zookeeper)) `Apache-2.0` `Java/C++`
 
 
 ### Software Containers
@@ -662,10 +662,10 @@ Software for management of [router](https://en.wikipedia.org/wiki/Router_(comput
 Troubleshooting tools.
 
 - [grml](https://grml.org) - bootable Debian Live CD with powerful CLI tools. ([Source Code](https://github.com/grml/)) `GPL-3.0` `Shell`
-- [mitmproxy](http://mitmproxy.org/) - A Python tool used for intercepting, viewing and modifying network traffic. Invaluable in troubleshooting certain problems. ([Source Code](https://github.com/mitmproxy/mitmproxy)) `MIT` `Python`
+- [mitmproxy](https://mitmproxy.org/) - A Python tool used for intercepting, viewing and modifying network traffic. Invaluable in troubleshooting certain problems. ([Source Code](https://github.com/mitmproxy/mitmproxy)) `MIT` `Python`
 - [mtr](https://www.bitwizard.nl/mtr/) - Network utility that combines traceroute and ping. ([Source Code](https://github.com/traviscross/mtr)) `GPL-2.0` `C`
 - [perf-tools](https://github.com/brendangregg/perf-tools) - Performance analysis tools based on Linux perf_events (aka perf) and ftrace. `GPL-2.0` `Shell`
-- [Sysdig](http://www.sysdig.org/) - Capture system state and activity from a running Linux instance, then save, filter and analyze. ([Source Code](https://github.com/draios/sysdig)) `Apache-2.0` `Docker/Lua/C`
+- [Sysdig](https://www.sysdig.com/) - Capture system state and activity from a running Linux instance, then save, filter and analyze. ([Source Code](https://github.com/draios/sysdig)) `Apache-2.0` `Docker/Lua/C`
 - [Wireshark](https://www.wireshark.org/) - The world's foremost network protocol analyzer. ([Source Code](https://gitlab.com/wireshark/wireshark)) `GPL-2.0` `C`
 
 
@@ -688,17 +688,17 @@ Software versioning and revision control.
 
 Virtualization software.
 
-- [Ganeti](http://www.ganeti.org/) - Cluster virtual server management software tool built on top of KVM and Xen. ([Source Code](https://github.com/ganeti/ganeti)) `BSD-2-Clause` `Python/Haskell`
-- [KVM](http://www.linux-kvm.org) - Linux kernel virtualization infrastructure. ([Source Code](https://git.kernel.org/pub/scm/virt/kvm/kvm.git/)) `GPL-2.0/LGPL-2.0` `C`
-- [OpenNebula](http://opennebula.org/) - Build and manage enterprise clouds for virtualized services, containerized applications and serverless computing. ([Source Code](https://github.com/OpenNebula/one)) `Apache-2.0` `C++`
-- [oVirt](http://www.ovirt.org/) - Manages virtual machines, storage and virtual networks. ([Source Code](https://github.com/oVirt)) `Apache-2.0` `Java`
+- [Ganeti](https://www.ganeti.org/) - Cluster virtual server management software tool built on top of KVM and Xen. ([Source Code](https://github.com/ganeti/ganeti)) `BSD-2-Clause` `Python/Haskell`
+- [KVM](https://www.linux-kvm.org) - Linux kernel virtualization infrastructure. ([Source Code](https://git.kernel.org/pub/scm/virt/kvm/kvm.git/)) `GPL-2.0/LGPL-2.0` `C`
+- [OpenNebula](https://opennebula.org/) - Build and manage enterprise clouds for virtualized services, containerized applications and serverless computing. ([Source Code](https://github.com/OpenNebula/one)) `Apache-2.0` `C++`
+- [oVirt](https://www.ovirt.org/) - Manages virtual machines, storage and virtual networks. ([Source Code](https://github.com/oVirt)) `Apache-2.0` `Java`
 - [Packer](https://www.packer.io/) - A tool for creating identical machine images for multiple platforms from a single source configuration. ([Source Code](https://github.com/hashicorp/packer)) `MPL-2.0` `Go`
 - [Proxmox VE](https://www.proxmox.com/proxmox-ve) - Virtualization management solution. ([Source Code](https://git.proxmox.com/)) `GPL-2.0` `Perl/Shell`
-- [QEMU](http://www.qemu.org/) - QEMU is a generic machine emulator and virtualizer. ([Source Code](https://gitlab.com/qemu-project/qemu)) `LGPL-2.1` `C`
+- [QEMU](https://www.qemu.org/) - QEMU is a generic machine emulator and virtualizer. ([Source Code](https://gitlab.com/qemu-project/qemu)) `LGPL-2.1` `C`
 - [Vagrant](https://www.vagrantup.com/) - Tool for building complete development environments. ([Source Code](https://github.com/hashicorp/vagrant)) `BUSL-1.1` `Ruby`
 - [VirtualBox](https://www.virtualbox.org/) - Virtualization product from Oracle Corporation. ([Source Code](https://www.virtualbox.org/browser/vbox)) `GPL-3.0/CDDL-1.0` `C++`
 - [XCP-ng](https://www.xcp-ng.org/) - Virtualization platform based on Xen Source and Citrix® Hypervisor (formerly XenServer). ([Source Code](https://github.com/xcp-ng)) `GPL-2.0` `C`
-- [Xen](http://www.xenproject.org/) - Virtual machine monitor for 32/64 bit Intel / AMD (IA 64) and PowerPC 970 architectures. ([Source Code](http://xenbits.xenproject.org/gitweb/?p=xen.git;a=tree;hb=HEAD)) `GPL-2.0` `C`
+- [Xen](https://www.xenproject.org/) - Virtual machine monitor for 32/64 bit Intel / AMD (IA 64) and PowerPC 970 architectures. ([Source Code](https://xenbits.xenproject.org/gitweb/?p=xen.git;a=tree;hb=HEAD)) `GPL-2.0` `C`
 
 
 ### VPN
@@ -711,13 +711,13 @@ VPN software.
 - [Firezone](https://www.firez.one/) - WireGuard based VPN Server and Firewall. ([Source Code](https://github.com/firezone/firezone)) `Apache-2.0` `Docker`
 - [Headscale](https://github.com/juanfont/headscale) - Self-hostable fork of [Tailscale](https://tailscale.com), cross-platform clients, simple to use, built-in (currently experimental) monitoring tools. `BSD-3-Clause` `Go`
 - [Nebula](https://github.com/slackhq/nebula) - A scalable p2p VPN with a focus on performance, simplicity and security. `MIT` `Go`
-- [ocserv](http://www.infradead.org/ocserv/) - Cisco AnyConnect-compatible VPN server. ([Source Code](https://gitlab.com/ocserv/ocserv)) `GPL-2.0` `C`
+- [ocserv](https://www.infradead.org/ocserv/) - Cisco AnyConnect-compatible VPN server. ([Source Code](https://gitlab.com/ocserv/ocserv)) `GPL-2.0` `C`
 - [OpenVPN](https://community.openvpn.net) - Uses a custom security protocol that utilizes SSL/TLS for key exchange. ([Source Code](https://github.com/OpenVPN/openvpn)) `GPL-2.0` `C`
 - [PiVPN](https://www.pivpn.io/) - The simplest way to setup and manage a VPN, designed for Raspberry Pi. ([Source Code](https://github.com/pivpn/pivpn)) `MIT` `Shell`
 - [SoftEther](https://www.softether.org/) - Multi-protocol software VPN with advanced features. ([Source Code](https://github.com/SoftEtherVPN/SoftEtherVPN/)) `Apache-2.0` `C`
 - [sshuttle](https://github.com/sshuttle/sshuttle) - Poor man's VPN. `LGPL-2.1` `Python`
 - [strongSwan](https://www.strongswan.org/) - Complete IPsec implementation for Linux. ([Source Code](https://github.com/strongswan/strongswan)) `GPL-2.0` `C`
-- [tinc](http://www.tinc-vpn.org/) - Distributed p2p VPN. ([Source Code](https://www.tinc-vpn.org/git/tinc)) `GPL-2.0` `C`
+- [tinc](https://www.tinc-vpn.org/) - Distributed p2p VPN. ([Source Code](https://www.tinc-vpn.org/git/tinc)) `GPL-2.0` `C`
 - [WireGuard](https://www.wireguard.com/) - Very fast VPN based on elliptic curve and public key crypto. ([Source Code](https://www.wireguard.com/repositories/)) `GPL-2.0` `C`
 
 ### Web
@@ -764,7 +764,7 @@ VPN software.
 
 ## Communities / Forums
 
-- [ArsTechnica OpenForum](http://arstechnica.com/civis/) - IT Forum which is attached to a large news site.
+- [ArsTechnica OpenForum](https://arstechnica.com/civis/) - IT Forum which is attached to a large news site.
 - [Reddit](https://www.reddit.com) - Really, really large bulletin board system.
   - [/r/Linux](https://www.reddit.com/r/linux) - News and information about Linux.
   - [/r/LinuxQuestions](https://www.reddit.com/r/linuxquestions)
@@ -777,9 +777,9 @@ VPN software.
 
 *Software package repositories.*
 
-- [AlternativeTo](http://alternativeto.net) - Find alternatives to software you know and discover new software.
+- [AlternativeTo](https://alternativeto.net) - Find alternatives to software you know and discover new software.
 - [deb.sury.org](https://deb.sury.org/) - Repository with LAMP updated packages for Debian and Ubuntu.
-- [ElRepo](http://elrepo.org/tiki/tiki-index.php) - Community Repo for Enterprise Linux (RHEL, CentOS, etc).
+- [ElRepo](https://elrepo.org/tiki/tiki-index.php) - Community Repo for Enterprise Linux (RHEL, CentOS, etc).
 - [EPEL](https://fedoraproject.org/wiki/EPEL) - Repository for RHEL and compatibles (CentOS, Scientific Linux).
 - [IUS](https://ius.io/) - Community project that provides RPM packages for newer versions of select software for Enterprise Linux distributions.
 - [Remi](http://rpms.famillecollet.com/) - Repository with LAMP updated packages for RHEL/Centos/Fedora.
@@ -791,7 +791,7 @@ VPN software.
 - [ArchWiki](https://wiki.archlinux.org/) - Arch Linux Wiki which has really nice written articles valid for other distros.
 - [Gentoo Wiki](https://wiki.gentoo.org/) - Gentoo Linux Wiki with a lot in-detail description of Linux components.
 - [Awesome SysAdmin @ LibHunt](https://sysadmin.libhunt.com) - Your go-to SysAdmin Toolbox. Based on the list here.
-- [Ops School](http://www.opsschool.org) - Comprehensive program that will help you learn to be an operations engineer.
+- [Ops School](https://www.opsschool.org) - Comprehensive program that will help you learn to be an operations engineer.
 - [Digital Ocean Tutorials](https://www.digitalocean.com/community/tutorials) - 6,000+ tutorials for getting the basics of certain applications/tools/systems administration topics.
 
 ------------------