An Web IDE that enables you to edit, compile, cvs in/out, do file release and produce documentation from a single friendly user web page or out of a Makefile!
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
A webbased XML development toolkit to edit, validate and preview XML files. This program gives you a structured view of the XML data.
It has support for multiple XML formats: SVG, DocBook, XHTML and more. phpXIedit is written in PHP.
XPHP is an IDE authoring tool for Windows that allows you to design, develop, test, debug and deploy PHP applications. [This project has been discontinued since 2005]
The DynAPI <!-- I D E --> is aimed at being an extensible tool for easy and correct development of dynamic webpages with client-side scripting with focus on the HTML Document Object Model as controlled by ECMA/Javascript.
Weblipse aims to be a web ide for web developers. So far it lets you edit files in your server without having to use ftp. I plan to add some file managing and svn clienting.