ACM International Programming Contest: Annual contest for teams of 3 university/college students involving algorithmic programming problems. Regional contests lead to World Finals. Organized by the ACM

DevShed Forums: A forum for developers of many different technologies including PHP, SQL, ASP, Perl, and Java

GCC: GNU Compiler Collection: Developed by GNU project as free compiler for GNU system. Front ends: C, C++, Objective-C, Fortran, Java, Ada; libraries for libstdc++, and libgcj. Mission, mail lists, timeline, contributors, committee, instructions, manual, FAQ, downloads, plans, bug reports. [Open Source, GPL

International Olympiad in Informatics: Annual computing-science competition for talented senior high-school students. Contains links to the homepages for every year and status information about the organisation of the event

OpenGL Registry: A record of OpenGL extensions, along with information about using OpenGL extensions and creating new OpenGL extension

OpenGL.org: The official site for OpenGL information

Threads: The Open Group Base Specifications Issue 6 (IEEE Std 1003.1, 2004 Edition) chapter for threads. Includes manual pages of all POSIX thread functions