Software for PHP
CodeIgniter
CodeIgniter is a powerful PHP framework with an extremly small footpring. The framework is built from the ground up to aid developers that want to build structured, secure and scalable web applications written in PHP. CodeIgniter is designed and developed at EllisLab and released as free and open source software under the MIT License.
Simple Machines Forum
Simple Machines Forum or SMF in short is a free and open-source forum software. SMF can be used to build your own online community that you self-host on a host of your choice. Simple Machines Forum comes packed with features for customization, extension and management of your community. The template engine puts you in control of the design of your community. The plugin architecture makes it easy to extend and provide further feautres though third-party built packages.
Flarum
A free and open-source modern forum software written in PHP. With Flarum you can eaisly setup your own discussion froum and host it online.
CakePHP
CakePHP is a free and open source web framework for the programming language PHP. With CakePHP you can with ease, develop, deploy and maintain web applcations. CakePHP provides a sound structure that allow you to create organized applications that can scale and adapt as your project grows. Out of the box, CakePHP provides features like bake script, a rich query API, short RL syntax, database support for MySQL, SQLite, PostgreSQL, SQL Server, Oracle and more. It also includes features that make you app easier to develop such as automatic code generation, database migrations, fast and flexible templating language, and localization.
PHP Microsite Boilerplate
PHP Microsite Boilerplate is a PHP framework to create simple, yet strongly functional, fast, and secure websites on basically every environment. PHP Microsite Boilerplate provides a simple starting block without installation of multiple dependencies and exhausting setup and configuration process. Allowing people to focus on building their website and simply host on cheap share hosting, cloud instances and hardware.
ProcessWire
With ProcessWire you can connect all your content seamlessly and making content management fast, easy and fun. ProcessWire is a free and open-source content management system and framework released under the Mozilla Public License 2.0. The CMS is built around an API wit similar naming connventions to that of jQuery, which makes it easier to use for JavaScript developers. It also provides a secure foundation, proven scalability and the performance needed to manage content online sucessfully.
ThirstyAffiliates
ThirstyAffiliates is an affiliate link cloaking and redirect plugin for WordPress. However, ThirstyAffiliates is more than just you run of the mill affiliate link cloaker, its a tool designed to help you as a blogger to make more money. It includes tools for auto-linking keywords, creating reports with charts and tables for actionable statistics, geo-location linking, smart uncloaking, proactive link fixer that ensures that your affiliate links are always up to date, automatic 404 checker and integration with Google Analytics events.
LayerBB
LayerBB is a small yet feature rich, free and open-source community software written in PHP. LayerBB enables you to quickly and easily start your own community while providing great flexibility and customisability.
vBulletin
vBulletin is a powerful commercial forum software written in PHP. The software is built to be easily extended through plguins and customized with themes. vBulletin is used to power many of the largest forum, communities and social site across the web. Over 100,000 sites are currenty powered by vBulletin.