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

Software package for Windows includes an Apache server, a MySQL database, PHP 5.2.0, as well as some PHP development tools. The installation files, website and product support are also available in French and Spanish. [Freeware]

Offers graphical front-end access to the php.ini file plus the ability to add other configuration directives, such as for the Zend optimizer or MSSQL. Windows only. [Freeware]

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

A project to join PHP, which has many libs, and REP, which is powerful.

A full-featured profiler/debugger that is loaded as a zend_extension. It aims to be an analog of C's gprof or Perl's Devel::DProf. Offered from PHP.net [Open source, GPL]

PHP debugger for stepping through code, breaking at errors and breakpoints. Site also contains full documentation, licensing information, and a "help out" section.[Open source, GPL]

PHP debugger that allows you to execute PHP scripts in step-by-step manner and trace down errors. Site offers installation instructions and user support forum. [Commercial]

A simple PHP programming framework. This adopts simple rules and guidelines to enable PHP programmers to create a web application quickly and with ease. Website also contains documentation and RBAC scheme. [Freeware]

Standards-compliant HTML filtering library written in PHP. Plug-ins, demo, and forums also available through the website. [Open source]