EasyPHP
A software package for Windows includes an Apache server, a MySQL database, a fully PHP execution, as well as some PHP development tools.

PHPTriad
A Windows installer for an Apache/PHP/MySQL/Perl environment.

QaDRAM
a Delphi-like RAD tool for PHP.

Web-based PHP Class Generator
A very basic PHP class builder to generate class templates useful for object-oriented programming in PHP.

PHPEdit
A full featured PHP IDE for Windows. It has code insight, code completion, syntax-highlighting, integrated debugger, code browser, keyboard templates. [Open source, PHPEdit licence]

PHP4HS (PHP Development Extensions for HomeSite)
The spot for people using HomeSite for PHP or ASP development to find help and to exchange add-on extensions, resources, help, links, tips, requests and articles.

ionCube PHP Accelerator
A PHP extension to the PHP Zend engine that accelerates compilation and execution of scripts. Works particularly well with the Smarty templating system.

Javuh
An organized distribution of PHP classes, including the Psychoo site modeling system, Internet protocols, database abstraction.

Zend Studio
Integrated Development Environment for PHP. Versions for linux, Mac and Windows. [Commercial]

PHP Coder
An Integrated Development Environment for PHP. A freeware tool for PHP programmers, more than just an editor. [Window9x/NT]

PhormGen
Builds a completely functional PHP add/edit/delete script based on the MySQL table definition. [Shareware, also online demo]

PHP Debugger
A tool that allows you to execute php script in step-by-step manner, and trace down errors.

UMA
A PHP user management and authentication system. Utilizes a MySQL database, object-oriented design. Formerly known as Rampart. [Open source, LGPL]

Analog X - PHP Config
Front end to the php.ini file. Includes graphical components for the standard PHP configuration options, plus the ability to add in 'other' configuration directives, such as for the zend optimizer. Windows only. Freeware.

DzSoft PHP Editor
A functional php editor with tiny web server build-in.

Dev-PHP
A full-featured Integrated Development Environment for PHP on Windows. It's fast, powerful and has a user-friendly interfase. It has many cool features, like Function browsing and full integration with the PHP parser and the PHP-GTK library. [Open source, GPL]

FoxServ
An Apache, mySQL, PHP installer package for Windows. It support user defined configuration during installation, PHP as a module, PEAR, and the Zend Optimizer.

PHPEclipse
A PHP IDE built as an Eclipse plugin. It takes advantage of a well-designed, robust and widely used application framework. [Open source, Common Public License]

Zend Performance Suite for PHP
Performance accelerator for PHP, with content-caching, compression and compiled-code caching. [Commercial]

Zend SafeGuard Suite for PHP
Protects and licenses PHP applications for secure deployment without exposing the source code or fear of piracy. [Commercial]

Lucid PHP Script Installer
A Windows program that acts as an Installer for the PHP scripts. The GUI is very like the standard windows installers. After uploading it can CHMOD any files and run MySql statements to complete the installation.

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

PHP Expert Editor
A tool for writing, editing, and debugging PHP scripts and HTML pages. It has internal browser, Debugger, Code Explorer, File Explorer, a built-in FTP client, Project Explorer, customizable Code Templates. [Shareware]

PSD
A visual frontend for debugging PHP. It runs on Win98SE and newer and can be used remotely. [Freeware]

TemplateTamer
A web application development tool for creating and maintaining a template based dynamic PHP web applications, with clearly separated code from the html design.

PHP Expert Editor
An easy-to-use PHP IDE for Windows. Has an internal HTTP-server and Debugger to run, test and debug PHP scripts. [Shareware]

PHPREP
Project provides a php extension that allows to use lisp (as provided by librep) in PHP scripts. [Open source, GPL]

Turck MMCache
A PHP accelerator, optimizer, encoder and dynamic content cache for PHP. [Open source, GPL]

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

RedKernel Referer Tracker - Free Php/MySql Script
A powerful referer tracking script that will draw detailed graphics depending on the period, the referring domain and the audited host.

e-novative - e-Business Software & Solutions
Home of e-novative WAMP, an automated installer for Apache, PHP, MySql and phpMyAdmin on Windows. Free download.

Apache Friends XAMPP
XAMPP is an easy to install Apache Distribution for Linux and Windows. The package includes the Apache web server, MySQL, SQLite, PHP, Perl, a FTP-Server and phpMyAdmin.

Gubed
A PHP debugger for stepping through code, breakint at errors and breakpoints. [Open source, GPL]

PhpED IDE
An integrated development environment (IDE) for PHP for Windows and Linux. It supports PHP software development on all stages including coding, debugging, profiling and publishing. By NuSphere. [Commercial]

Internet Development Kit for PHP
Collection free PHP development tools from other companies. Homepage and download links for each product. Selling CD version of collection.

Advanced Web Forms - PHP development tools
Allows the use of a PHP/HTML form to produce basic HTML invoices.

Maguma Workbench
A customizable IDE with modular plug-in architecture for the development of PHP scripts. [Commercial]

Keith's PHP Editors
Fairly comprehensive directory of editors that support PHP. Includes name, platforms, licence, homepage and comments, including user comments, for each editor listed.

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

VS.Php
A PHP editor built on top of Visual Studio .Net 2003.

SECreator for PHP
A Windows tool help create a search engine for website. It crawl a web site, indexing all the pages that it finds. It will then create PHP script files and XML file database.[Commercial]

WAMP5
WAMP5 installs Apache, PHP5 and MySQL on Windows plateform. It comes with a service manager as an icon tray and lots of options.

MySQL PHP Code Generator
Generate all the PHP scripts need to manage in PHP data from MySQL database. By Web Database Software.

PHAkt
An server model for Macromedia Dreamweaver MX, allowing PHP generation using the same techniques as when developing ASP/JSP/ColdFusion. [Open source, GPL]

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

phpCodeGenie Code Generator
A code generator for database driven applications. PCG can generate entire working basic database driven applications from different databases.

WizzyWeb
Web-based application development tool. Self-contained, ODBC compliant (tab delimited) database applications can be created completely online. Custom front-end HTML data entry forms, reports and supporting back-end code are automatically generated to be saved locally and FTP'd for instant deployment.

TruStudio
A cross-platform, multi-language Integrated Development Environment for PHP and Python built on top of Eclipse Platform.

PHP/MySQL Code Generator
An online code generator creates PHP code based on MySQL table stucture and data entered via an HTML form. Created scripts can search and manipulate data in MySQL table.

EngInSite Editor for PHP
A complete integrated development environment (IDE) for creating, testing and debugging PHP scripts, which runs on Windows 9x/NT/2000/XP. [Commercial]