Open Source Projects in PHP
Feng Office
Online collaboration and project management suite
Zurmo
Gamified CRM with sales and lead tracking
Cotonti
Web framework and CMS focused on speed and security
phpwcms
Fast PHP and MySQL CMS used on thousands of sites
eXtplorer
PHP file manager for browsing and editing server files
CubeCart
Free PHP e-commerce platform with no sales fees
Xoops
Extensible object-oriented portal and CMS
Coppermine
Multi-purpose web photo gallery
Phorum
The original PHP and MySQL forum software
Pluck
Small, simple CMS for small websites
CumulusClips
Video CMS for building a video sharing site
Commentics
Comment system for websites
phpCollab
Project management and collaboration over the internet
Open Preprint Systems
Platform for running preprint servers
FUDforum
Fast discussion forum that doubles as a mailing list manager
bbPress
Forum plugin from the creators of WordPress
CSZ CMS
Responsive CMS built on CodeIgniter and Bootstrap
Dotclear
User-friendly open-source publishing tool from France
UserSpice
PHP user management framework with admin dashboard
WBCE CMS
Secure, SEO-friendly CMS with a friendly interface
GeniXCMS
Simple PHP CMS and framework for developers
PopojiCMS
Beginner-friendly PHP OOP content management system
CE Phoenix
Modern, modular osCommerce-derived shopping cart
Forma LMS
Corporate e-learning platform for training and compliance