A portable, multi-platform, command-line driven graphing utility
A famous scientific plotting package, features include 2D and 3D plotting, a huge number of output formats, interactive input or script-driven options, and a large set of scripted examples.
XPaint is a simple paint program for X, suitable for producing simple graphics. It does offer some advanced features such as image processing functions and gradient fill. XPaint was originally written by David Koblas.
CuTest lets you write unit tests for your C code. You should use it because: (1) It has the cutest name, (2) It looks and feels like JUnit, (3) It is cross-platform, (4) It ships in a single .c and .h file for ease of deployment.
yaSSL, or yet another SSL, is an embedded ssl library for programmers building security functionality into their applications and devices. yaSSL is highly portable, and runs on standard as well as embedded platforms(QNX, ThreadX, VxWorks, Tron) yaSSL is still available but no longer being developed. Current development on the same project continues under wolfSSL. Visit yaSSL Home above for the latest stable release.
MySQL is a true multi-user, multi-threaded SQL database server.
The purpose of wxSSL is to allow wxWindows programmers to write SSL programs using socket classes similar to what exists in the current wxWindows. wxSSL will implement the IPC and socket classes over SSL.