Fat-Free Framework
Developer(s)F3::Factory / Bong Cosca
Stable release
3.8.2[1] / 2023-07-24[±]
RepositoryFat-Free Repository
Written inPHP 5.4+[2]
Operating systemCross-platform
TypeWeb framework
LicenseGNU General Public License
Websitefatfreeframework.com Edit this at Wikidata

Fat-Free Framework is an open-source web framework distributed under the GNU General Public License and hosted by GitHub and SourceForge. The software seeks to combine a full featureset with a lightweight code base while being easy to learn, use and extend.

The source code (~83KB) is written almost entirely in PHP and engineered specifically with user experience and usability as its primary design goals.[3][4][5]

Commonly called F3 by PHP developers, Fat-Free was released as free software in 2009.[6] Its general architecture was influenced by Ruby's Sinatra. The lightweight code base[7] is controlled and maintained by a small core team, with additional functionality and funding contributions coming from various enterprises and user groups,[8] who also help guide its future direction.

The base feature set includes a URL router, cache engine, and support for multilingual applications. Fat-Free also has a number of plug-ins that extend its functionality as well as data mappers for SQL and NoSQL database back-ends: SQLite, MySQL, PostgreSQL, MSSQL, Sybase, DB2, MongoDB, CouchDB, and Flat File.

The core functionality is accompanied by a number of optional plug-ins, among them a template engine, a Unit testing toolkit, Database-managed sessions, Markdown-to-HTML converter, Atom/RSS feed reader, Image processor, Geodata handler, a Basket/Shopping cart application and data validation.

See also


  1. ^ "fatfree/lib/CHANGELOG.md". github.com. Retrieved 2024-04-12.
  2. ^ "Getting Started - Fat-Free Framework for PHP". fatfreeframework.com. Retrieved 2020-12-02.
  3. ^ "About Fat-Free Framework". StackOverflow. Retrieved 4 April 2014.
  4. ^ "Slim Down Your PHP Development".
  5. ^ "My Impressions of Fat-Free Framework for PHP".
  6. ^ php Architect Feb 26, 2010 issue
  7. ^ PHP Software Reviews: Five Great PHP Frameworks
  8. ^ "Credits". Github. 19 March 2014. Retrieved 13 May 2014.