A hackable text editor for the 21st Century
Kotlin code completion, diagnostics and more for any editor/IDE
A free C, C++ and Fortran IDE
Rapid applications development tool and libraries for FPC
Lightweight and easy to use cross-platform C++ IDE
Kile is a feature-rich LaTeX editor
Modernized fork of NEdit, with unicode support and AA text rendering
Symja - Java computer algebra language & symbolic math library
ideU the ide. Universal.
Customizable multiplatform development environment.
Web IDE in single HTML file
an OSGi-based Swing Application Framework
A powerful editor and graphical debugger for code written in Scilab
Open Source C & C++ IDE for Windows
IDLE Extensions
Jexer - Java Text User Interface Library
A syntax highlighting, code folding text component written in Swing
Launch an external diff tool like WinMerge in Eclipse
Eclipse plugin for VCS ClearCase