ECF is a framework for building communications functions into Eclipse-based tools and applications. It can be used to create other plugins, tools, or full applications that require asynchronous point-to-point or publish-and-subscribe messaging.

ECF is also a small set of applications for real-time developer communication, including instant messaging, file sharing, and real-time collaboration....

Vanilla is an open-source discussion forum for the web. It is built upon Garden, our pluggable application development framework.

Claroline is a free application based on PHP/MySQL allowing teachers or education organizations to create and administrate courses through the web.

Developed from teachers to teachers, Claroline is built over sound pedagogical principles allowing a large variety of pedagogical setup including widening of traditional classroom and online collaborative learning....

Kdenlive is a non-linear video editor for GNU/Linux and FreeBSD, which supports DV, AVCHD and HDV editing. Kdenlive relies on several other open source projects, such as FFmpeg and the MLT video framework. It was designed to answer all needs, from basic video editing to semi-professional work....

The Yocto Project™ is an open source collaboration project that provides templates, tools and methods to help you create custom Linux-based systems for embedded products regardless of the hardware architecture.

Pandoc is a Haskell library for converting from one markup format to another, and a command-line tool that uses this library. It can read markdown and (subsets of) reStructuredText, HTML, and LaTeX, and it can write markdown, reStructuredText, HTML, LaTeX, ConTeXt, RTF, DocBook XML, groff man,...

Guile is an implementation of the Scheme programming language. In addition to supporting the R5RS Scheme standard, a large subset of R6RS, and many SRFIs, Guile includes full access to POSIX system calls, networking support, multiple threads, dynamic linking, and a foreign function call interface. Guile can run interactively, as a script interpreter, and as a Scheme compiler to VM bytecode suitable for stand-alone applications. It is also packaged as a library so that applications can easily incorporate a complete Scheme interpreter/VM....

Linux NFS development web site.,

Jifty is a way to build web applications.,

Rack provides a common API for connecting web frameworks, web servers and layers of software inbetween.

Official repos: http://github.com/rack/rack