A free Xul-like markup language for describing user interfaces with PHP-GTK extension.

Online CRUD scaffold creator for MySQL. Generates code from MySQL query in PHP for copying into existing code. [Free, Browser-based]

Editor for PHP, but also HTML, XHTML, CSS and JavaScript code with validation, reuse, navigation and formatting functions, syntax highlighting, PHP debugger, PHP function hints, file and FTP explorer, and code templates. [Shareware]

A powerful referer tracking script that will draw detailed graphics depending on the period, the referring domain and the audited host.

Online tool to check and tweak regular expressions. Supports ereg, eregi and preg_match.

Produces optimized stand alone applications, libraries, and Web applications from standard PHP source code.

PHP unit tester and mock objects framework. [Open source, Open Group Test Suite License]

An editor which is designed for PHP programming language. Top PHP Studio has internal HTTP-server and internal browser to test PHP scripts. [Shareware]

A Windows program which uses an extendable Delphi or VB-like component model for PHP-based web programming.

An open source PHP accelerator, encoder and dynamic content cache for PHP that also features an optional obfuscator. Features a standalone loader, an API, and installation notes. [Open Source]