Piklab is an integrated development environment (IDE) for applications based on Microchip PIC and dsPIC microcontrollers similar to the MPLAB environment. It integrates with several compiler and assembler toolchains (like gputils, sdcc, c18) and with the GPSim simulator. It supports the most common programmers (serial, parallel, ICD2, Pickit2, PicStart+), the ICD2 debugger, and several bootloaders (Tiny, Pickit2, and Picdem)....

The Shapefile C Library provides the ability to write simple C programs for reading, writing and updating (to a limited extent) ESRI Shapefiles, and the associated attribute file (.dbf).

WMFS (Window Manager From Scratch) is a lightweight and highly configurable tiling window manager for X. Configurable with a configuration file, supports Xft (Freetype) fonts and is compliant with the Extended Window Manager Hints (EWMH) specifications, Xinerama and Xrandr....

ctypes python module for the Irrlicht Engine SDK,

The diet libc is a libc that is optimized for small size. It can be used to create small statically linked binaries for Linux on alpha, arm, hppa, ia64, i386, mips, s390, sparc, sparc64, ppc and x86_64.

Open vSwitch is a production quality, multilayer virtual switch licensed under the open source Apache 2.0 license. It is designed to enable massive network automation through programmatic extension, while still supporting standard management interfaces (e.g. NetFlow, sFlow, RSPAN, ERSPAN, CLI). In addition, it is designed to support distribution across multiple physical servers similar to VMware’s vNetwork distributed vswitch or Cisco’s Nexus 1000V....

Crossfire is an open source, cooperative multiplayer graphical RPG and adventure game. Since its initial release, Crossfire has grown to encompass over 150 monsters, about 3000 maps to explore, an elaborate magic system, 13 races, 15 character classes, a system of skills, and many artifacts and treasures. Crossfire is based in a medieval fantasy world and is similar to other games of this genre....

This project provides a usable color-picker that can be embedded in iOS apps. Its source has been downloaded hundreds of times and used in several production iPhone and iPad apps.

Extending work from Vevent described in http://www.v-vent.com/blog/?p=27

OpenSync is a synchronization framework that is platform and distribution independent. It consists of a powerful sync-engine and several plugins that can be used to connect to devices.

OpenSync is very flexible and capable of synchronizing any type of data, including contacts, calendar, tasks, notes and files....

Nokogiri is a libxml wrapper. It features an HTML, XML, SAX, and Reader parser, as well as XPath and CSS interfaces for searching. Nokogiri is also a drop in replacement for Hpricot.