A free C, C++ and Fortran IDE
Kile is a feature-rich LaTeX editor
Simple and flexible programming language for applications development
IDLE Extensions
Vim-like editing in Eclipse
Tools to support the learning of the C programming language
A tiny and lightweight IDE for the Go programming language
Graph algorithms interpreter, IDE, debugger, 3D visualizations.
Syntax coloring editor eclipse plugin
Dev-C++ with wxWidgets designer
The Scratch mod, Tiger
Project handler for SciTE
A modernized, platform independant version of Dev-C++