Doxygen
Doxygen - A documentation system for C++, C, Java and IDL. It generates Latex, HTML, RTF, Postscript and Unix man page outputs from a set of documented source files. [Open Source, GPL] www.stack.nl/~dimitri/doxygen

HelpCruiser
HelpCruiser - Destined for creation documents in various formats such as HTML, CHM, PDF, RTF and XML. It's optimized for solving tasks, that appear during the process of creation help files, descriptions and manuals. [Commercial] www.helpcruiser.com

Helptrix
Helptrix - Help authoring system for creating professional help and manuals in several formats (includes HTML and PDF) from a single source. [Commercial] www.helptrix.com

Highlight
Highlight - Hosts a tool which helps to format and colour source code of over 120 supported programming languages. Coloured output is available in HTML, XHTML, RTF, TeX, LaTeX and XML format. www.andre-simon.de

IDIOM Source Code Compiler
IDIOM Source Code Compiler - Compiles reusable text databases and HTML documentation from C, C++, Perl etc. source codes. www.visualco.de

KDOC
KDOC - Generates LaTeX, HTML, and man pages from comments in C++ and IDL files. [Open Source, GPL] www.ph.unimelb.edu.au/~ssk/kde/kdoc

Living Address: Living Doc
Living Address: Living Doc - Documentation tool that automatically documents existing ASP and SQL Server projects. Presents the documentation in a web interface. [Commercial, trial version] www.livingaddress.com/livingdoc.asp

Natural Docs
Natural Docs - A documentation program that generates HTML from documented C++, Java, and Perl. Focuses on a transparent syntax that keeps the comments in the source code readable. [Open source] www.naturaldocs.org

PTLogica TwinText
PTLogica TwinText - Automatically generates HTML documentation from source code comments. Works with C, C++, Visual Basic and languages with similar commenting syntax. www.ptlogica.com/TwinText

ROBODoc
ROBODoc - Generates documentation in a variety of formats from source code. Supports HTML, PDF, LaTeX, C++, and Perl, among many others. [Open Source, GPL] www.xs4all.nl/~rfsber/Robo

Universal Report
Universal Report - A generic code analysis and documentation tool to easily analyse and generate a structured and formatted overview of a given set of program codes in Basic, C, C++, COBOL, Fortran, Java, Matlab, Pascal, Visual Basic, Borland C++ Builder, Delphi, Kylix, Visual C++, Visual Basic .Net, Visual C#, Visual J++. It can generate reports in common formats (text, LaTeX, HTML) and languages (English, French, German, Spanish, Portuguese, and Italian). www.omegacomputer.com

Visustin
Visustin - Visualize source code of many programming languages with flow charts. Help in documenting and reviewing algorithms. www.aivosto.com/visustin.html

Web C Plus Plus: Webcpp
Web C Plus Plus: Webcpp - Converts source code into HTML files via fully customizable syntax highlighting engine and color schemes; supports over 20 languages, runs on Linux, Unix, Windows. [Open Source, GPL] webcpp.sourceforge.net

Achievo ATK
Achievo ATK - An object oriented Web-application Framework, written in PHP. It is targeted at developers who wish to focus on business logic, instead of coding HTML. [Open source] www.achievo.org/atk

AjaxAC
AjaxAC - Object oriented Web-application framework offering to build Ajax applications. [Open source, Apache licence] ajax.zervaas.com.au

Akelos Framework
Akelos Framework - Port of Ruby on Rails development framework and designed to work for PHP4 and PHP5. The purpose of the framework is to support developers in building and managing multilingual database-backed web applications using the Model-View-Control pattern [Open Source, GLPL]. www.akelos.org

BlueShoes PHP Framework
BlueShoes PHP Framework - An application framework and content management system written in PHP 4. [Freeware and commercial versions] www.blueshoes.org

Caffeine Web Framework
Caffeine Web Framework - PHP5-based Web Framework that utilizes a MVC design pattern and also includes a minimal ORM layer to support rapid website development [BSD License]. framework.korsengineering.com

CodeIgniter
CodeIgniter - A lightweight open source web application framework that utilizes the MVC architecture to quickly develop web applications without having to adhere to strict templating and coding rules. [Open source] codeigniter.com

Compass
Compass - Lightweight object-oriented library which allows to develop oriented object applications quickly, using wide-known patterns like MVC, FrontController and Injection of Control. sourceforge.net/projects/compass-php5

DIY Framework
DIY Framework - Open–source web application framework based on MVC architecture, object–oriented PHP 5, MySQL, and XSLT. [LGPL] www.xml.lt/Resources/Framework

DotPHP
DotPHP - A framework that wants to be like ASP.NET. [Open source, GPL] webcomp.sourceforge.net

The Edifice API
The Edifice API - A library of PHP classes and functions for building secure scalable web applications. Includes configuration, templates and 'DSN' style database management. sourceforge.net/projects/cwpapi

EnjoyCoding
EnjoyCoding - Provides a MVC oriented framework. Offers the documentation, download links and tools to generate and test an application. www.enjoycoding.com

ErisX
ErisX - A PHP5 framework for Web-based applications. www.erisx.de

Flourish
Flourish - A modular and portable PHP5 library focused on usability, documentation and security. Licensed under MIT, it includes classes to perform ORM, precise money calculation, cryptography, image manipulation and more. [MIT] flourishlib.com

Freeform Framework
Freeform Framework - A web application framework aimed at creating scalable web apllications. Support MVC (Model-View-Controller)architecture, standartized forms processing, class and resource packaging, sessions and security. dev6.php5.nedlinux.com/?action=ViewProject&project=39

Fusebox for PHP
Fusebox for PHP - The web application development framework originally for ColdFusion, now extended to PHP. www.fusebox.org/index.cfm?&fuseaction=phpframework.default

Good GUI Framework
Good GUI Framework - An object oriented application framework to apply basic principles of good GUI-design to the development of HTML-applications. The client side is pure HTML while the server side is pure object oriented PHP5. PHP classes are provided to work with database tables for the purpose of browsing, using nested transactions, and handling large datasets. de.geocities.com/ggf_team

Harmony
Harmony - Convert PHP code to JavaScript using Mootools. [MIT] www.harmony-framework.com

The Horde Application Framework
The Horde Application Framework - The Horde Application Framework is a general-purpose web application framework in PHP, providing classes for dealing with preferences, compression, browser detection, connection tracking, and MIME handling. Demo implementations frameworks are viewable [Open Source, LGPL]. www.horde.org/horde

The I Preprocessor (TIP)
The I Preprocessor (TIP) - Provides a general object oriented framework to build applications [PHP License] www.entidi.it/tip

IDriver
IDriver - A library/framework for developing database-oriented Web applications with PHP MySQL. [Open source, GPL] sourceforge.net/projects/idriver

Japha
Japha - An effort to implement the major functionality of the Java library in PHP5 classes and interface. [Open source, LGPL] freshmeat.net/projects/japha

Jelix
Jelix - Offers a MVC compatible application working with PHP5. [Open source, LGPL] www.jelix.org

LIMB
LIMB - A MVC (Model-view-controller) CMF with tree/OO based controller. [Open source, LGPL] www.limb-project.com

Midcom Project Framework
Midcom Project Framework - The core of the Midgard system. Also provides a CMS based on the framework. [Open Source, GPL] www.midgard-project.org/documentation/midcom

Mirchev Ideas PHP Framework
Mirchev Ideas PHP Framework - Professional RAD framework for PHP includes sorting, filtering, searching, listing, paging, adding, editing, and deleting functions. It is database independent and has localization support. [Open Source, GPL] www.mirchevideas.com/products/miphpf

Mojavi Project
Mojavi Project - A MVC (Model-View-Controller) framework for PHP. [Open source, LGPL] www.mojavi.org

Nephtali
Nephtali - Provides a PHP-based web framework running that requires Apache and PHP 5. Website also provides documentation and tutorials for implementation [MIT License]. nephtaliproject.com

The NO-SOD Project
The NO-SOD Project - A framework to implement web based solutions for regulated industries, including audit trails and security features. Main product is a web based full featured Document Management System (eDMS). [Open source, LGPL] no-sod.sourceforge.net/org/en

Openology
Openology - Project to build a web application development framework and associated applications on top of it. [Open source] www.openology.org

P4A - PHP For Applications
P4A - PHP For Applications - Object-Oriented Framework for building web-based event-driven applications. It features tableless HTML, accesskey support, point&click app generator, auto data type recognition, UTF-8, i18n/l10n, PEAR integration [Open Source, GPL]. p4a.crealabsfoundation.org

Pear
Pear - A framework and distribution system for reusable PHP components. [Open source] pear.php.net

Phocoa
Phocoa - Offers a web application framework inspired by Cocoa. [Open-Source, MIT] phocoa.com

PHP Fusebox 4 Wiki
PHP Fusebox 4 Wiki - For documentation, tips, usage hints and links for developing Fusebox 4 Framework/Methodology with PHP. fbx4.salientdigital.com

PHP on Trax
PHP on Trax - Ultra-rapid application development based on Ruby on Rails www.phpontrax.com

phpHtmlLib
phpHtmlLib - A set of PHP classes and library functions to help facilitate building, debugging, and rendering of XML, HTML, XHTML, WAP/WML Documents, and SVG (Scalable Vector Graphics) images as well as complex HTML 'widgets'. [Open source, LGPL] phphtmllib.newsblob.com

php.MVC
php.MVC - A framework for PHP web applications that implements the MVC design pattern. Also include SleeK Action Wizard tool.[Open source, LGPL] www.phpmvc.net

PHPOpenBiz
PHPOpenBiz - A PHP application framework that creates data centric business applications derived from XML metadata. PHPOpenBiz utilizes an AJAX enabled browser client, Model-View-Controller (MVC) and Object Relational Mapping (ORM). [BSD, GPL] www.phpopenbiz.org/jim

phpPeanuts
phpPeanuts - An object-oriented application framework. Generates user interface that dynamicly adapts to changes in domain classes. Includes a component model, persistency and navigational queries. [Open source, Academic Free License] www.phppeanuts.org

PHPSimpl
PHPSimpl - Offers an object oriented framework that want to improve quality and time of development. [GNU] code.google.com/p/phpsimpl

PHPTal
PHPTal - Implementation of Tal, Metal and I18N. Used to create pure XHTML templates in order to separate the user interface from business logic. [Open Source, LGPL] phptal.motion-twin.com

PHPulse
www.phpulse.comPHPulse - Lightweight MVC framework with integrated AJAX support, built-in Smarty templating engine, intuitive administration interface , and XUL support. [Open Source, GPL]

Prado
Prado - A component-based and event-driven framework allowing to rapidly build up highly interactive Web applications. [Open source, BSD] www.pradosoft.com

Pronto Project
Pronto Project - A robust, feature-rich MVC-based web framework that focuses on code reusability, elegance, and efficiency. Pronto currently runs on PHP4 and PHP5. [Open Source] www.prontoproject.com

PSX
PSX - A object-oriented and modular designed framework for developing web applications. psx separate strictly code from design with a template-engine based on XML and XSLT. phpsx.org

pureContent
pureContent - Offers tool for fastly include design around Website content. [Open source, GNU] download.geog.cam.ac.uk/projects/purecontent

Roadsend SiteManager
Roadsend SiteManager - A web application framework for PHP Developers that includes a framework for code modules and layout templates, database connectivity, SmartForms, sessions, and other tools. [Open source, Q Public License] www.roadsend.com/home/index.php?pageID=smphp

SCA - Smart Class Archive
SCA - Smart Class Archive - A PHP4/PHP5 class library which makes fundamental functions for PHP projects available. Includes a DataRecord class, a Localizer class, TemplateParser, ListGenerator, FormGenerator. [Open source, LGPL] www.project-sca.org