K2 is an advanced theme for WordPress.,

The QGIS Project. QGIS is a free and open source geographical information system.

Brasero is a application to burn CD/DVD for the Gnome Desktop. It is designed to be as simple as possible and has some unique features to enable users to create their discs easily and quickly.

The goal of the Syllable project is to create a family of easy-to-use free software operating systems. It is the continuation of the BeOS-like AtheOS.

Syllable Desktop has its own C kernel with symmetric multiprocessing, multithreaded pre-emptive multitasking, high POSIX compliancy, 64-bit journaled filesystem (AFS) with metadata, an integrated native GUI architecture with an object-oriented C++ API, SDL, singular native toolkit and multi-user desktop environment. The system seeks to be an integrated, lightweight, easy-to-program, powerful, high-performance graphical desktop environment which avoids legacy OS paradigms that frustrate developers and have hindered the computing masses' adoption of a free-software desktop....

A distributed build system for the Ruby community,

Plugin based multi-IM communicator. ncurses or gtk2 (in progress) based GUI.
Support for different protocols: irc, jabber (including gmail), gg (gadu-gadu largest polish IM), tlen, nntp (read only).

Epiphany Extensions is a collection of extensions for Epiphany, the GNOME web browser.

The XFS filesystem for the Linux kernel,

phpBMS is a PHP, MySQL, web-based business management system (BMS). phpBMS provides easy to use sales order entry system, PDF billing document creation, recurring invoices, and accounts receivable functionality.

phpBMS also has integrated task, file attachment, and note features that allows you to create tasks and notes, upload documents, and then associate (link) these items to other records inside phpBMS (such as uploading critical files associate with clients, products, or invoices.)...

FluxBB is a free open source forum application designed to be fast, light and user friendly. Version 1.3 of FluxBB, currently under development, adds a powerful extension system enabling you to create the forum that you really need.