Rapid applications development tool and libraries for FPC
Lightweight and easy to use cross-platform C++ IDE
Modernized fork of NEdit, with unicode support and AA text rendering
Jexer - Java Text User Interface Library
Learn Java the easy way!
A powerful editor and graphical debugger for code written in Scilab
Kile is a feature-rich LaTeX editor
Web IDE in single HTML file
IDLE Extensions
Launch an external diff tool like WinMerge in Eclipse
Eclipse plugin for VCS ClearCase
CodeLite: an open source, cross platform C/C++/PHP and JavaScript IDE
A lightweight programming environment for Java
Vim-like editing in Eclipse