Apache NetBeans
Phoenix is a modern open-source Code Editor for the web
CLI, SDK, and IDE plugins for Duel Agents
A free C, C++ and Fortran IDE
VSCode/Cursor extension that turns your editor into an IDE
Rapid applications development tool and libraries for FPC
Lightweight and easy to use cross-platform C++ IDE
Learn Java the easy way!
Customizable multiplatform development environment.
LiteIDE is a simple, open source, cross-platform Go IDE.
A hackable text editor for the 21st Century
Open Source C & C++ IDE for Windows
Launch an external diff tool like WinMerge in Eclipse
Eclipse plugin for VCS ClearCase
A modern, lightweight yet powerful text editor
CodeLite: an open source, cross platform C/C++/PHP and JavaScript IDE
Open-source plugins included in the distribution of IntelliJ IDEA
A lightweight programming environment for Java
Extensible HTML5 app for real-time collaborative projects