A project that has moved to GitHub
GLFW is an Open Source, multi-platform library for creating windows with OpenGL contexts and receiving input and events. It is easy to integrate into existing applications and does not lay claim to the main loop. GLFW has moved to GitHub: https://github.com/glfw
Deemon Scripting Language
A rich and powerful scripting language supporting the c preprocessor, classes, exceptions, lambdas, yield functions, label, switch-statement, pointers, foreign functions, and much more. With a fully packed standard library including support for file-io, threads, atomics, pipes, math, file-system, sockets, randomization, hashing, serialization, a wide selection of emulated c/c++ headers and more, deemon provides a suitable environment for any application. Syntax is easy to read and understand and is mostly based on the common languages such as c/c++, java and python, though for those fascinated by it, reaches very deep and allows for pleasingly beautiful code to be written. If you wish to learn deemon, download any package and take a look at 'lib/tut' Note: If you've already used v100, you'll be happy to see how much deemon has grown in the five months that have passed. Keep up to date with deemon at: https://github.com/GrieferAtWork/deemon
A lightweight GUI library
FUGE is a lightweight GUI library, intended to be used primarily in games and tools for game development. Supports graphics renderer adaptation, real-time layout editing, XML serialization, color schemes. Documentation contain tutorials with examples. Available on MS Windows and Linux.
A C++ library to load, edit and save Minecraft worlds using the beta McRegion format.
A static library for TUIs ("Console GUIs")
ConGUI-Lib is a library for creating text-user-interfaces. It is written in C++, using the object-oriented paradigm, to provide an easy way to create TUIs.
EasyWindow is an objected orientated GUI Library for C++. It is very easy to use with similiar GUI structure to PureBasic. Assumes the most work of the uncomfortable WinAPI on Windows.
A Fast and Useful C++ Library for Easier Handling of Windows API.
SGHLib Aims to be the Faster Library to Easily and Safely Access the Windows API and Other Non-Windows Extras. Contain your developments, big update incoming, which will remove all useless things, will bring more speed and templates and (maybe) a wiki.
Moved to GITORIOUS: http://gitorious.org/tinythread TinyThread++ is a minimalist, portable threading library for C++. It is modeled after the current C++0x standard (draft), implementing a subset thereof, and acts as a simple replacement library for compilers that lack support for C++0x.