QEMU is a generic and open source machine emulator and virtualizer.
CoreOS provides the tools to create and run distributed platforms.
NixOS supports atomic upgrades, rollbacks and multi-user package management, and it has a declarative approach to system configuration management that makes it easy to reproduce a configuration on another machine.
Spring helps development teams everywhere build simple, portable, fast and flexible JVM-based systems and applications.
Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.
WordPress is web software you can use to create a beautiful website or blog.
Drupal is an open source content management platform powering millions of websites and applications.
Joomla is an award-winning content management system (CMS), which enables you to build Web sites and powerful online applications.
Jekyll Transform your plain text into static websites and blogs.
Sphinx is a tool that makes it easy to create intelligent and beautiful documentation, written by Georg Brandl and licensed under the BSD license.
Docbook is a schema (available in several languages including RELAX NG, SGML and XML DTDs, and W3C XML Schema) maintained by the DocBook Technical Committee of OASIS.
Gitbook Build beautiful programming books and exercises using GitHub/Git and Markdown.
Gitolite is an access control layer on top of git.
cgit a hyperfast web frontend for git repositories written in C.