Dev-PHP is a well-featured IDE for PHP. Fast and powerful, it is easy to use and has a lot of cool features : class browser, scripts preview, integration with PHP parsers, PHP-GTK library, and Xdebug of course. Dev-PHP-usb slips even into your pocket.
AmIDE - Amiga Integrated Development Environment is a modern MUI based IDE system that should make the Amiga developer able to use his favourite Compiler system with a modern looking GUI System with features like filetype handling, Build/Make, TextEd
ECCO is a web-based IDE. In other words is an online development environment with file manager, console interface for compiling and execution of code and an editor with syntax highlighting, tabs and support for many languages and accessed with a browser
All APIs that help build prof of concepts of frameworks : bytecode, java, xml models analysis, querying and generation, using high level of abstraction.
An open source IDE for AROS Research Operating System
Simple and Powerful Latex Editor