GccEmployment.com

Open Source Software in C# (C-Sharp)
Directory of open source software focused in C#.
csharp-source.net/

C/C++ Users Journal Web Site
Lots of information on software design. Geared towards developers who use C or C++ as their language of choice.
www.cuj.com/

Sample C Source Code
Source code for sample C programs. Beginner examples as well as graphics library benchmark examples.
ourworld.compuserve.com/

C Source Codes @ VyomWorld.com
Contains categorized source codes in C, including interaction with Hardware.
www.vyomworld.com/

C/C++ Programs for the PC
Jason Cordes, aka Jae, computer science student with diverse interests and unique taste. A list of source code I have gathered over the years.
www.frenzy.com/

Exceptions in plain C
Hack which enables throwing and catching exception structures (which can be of anything) through non-local jumps.
adomas.org/

C# Code Samples
Small example programs in c#, each showing a concept: plugin, parser, morpher.
spiet.ath.cx/

CCured source-to-source C translator
CCured is a source-to-source translator for C. It analyzes the C program to determine the smallest number of run-time checks that must be inserted in the program to prevent all memory safety violations. The resulting program is memory safe, meaning that it will stop rather than overrun a buffer or scribble over memory that it shouldn't touch.
manju.cs.berkeley.edu/

Ashok's C programs
Implementation of data structures.
www.geocities.com/

VyomWorld.com - C Projects Page
Contains C/C++ Projects with source code.
www.vyomworld.com/