XOOPS is a free OpenSource PHP CMS project and Web Application Platform written in PHP for the MySQL database. It is object orientation makes it an ideal tool for developing small or large community websites, intra company and corporate portals, weblogs and much more.

Features of XOOPS:
- Database-driven: XOOPS uses relational databases (currently MySQL) to store data required for running a web-based content management system
- Fully Modularized: Modules can be installed/uninstalled/activated/deactivated with a click using the XOOPS module administration system
- Personalization: Registered users can edit their profiles, select site themes, upload custom avatars, and much more
- User Management: The ability to search for users by various criteria, send email and private messages to users through a template-based messaging system
- Supported World-wide: The XOOPS community has more than dozen official support sites around the world for support of non-English speaking users
- Multi-byte Language Support: Fully supports multi-byte languages, including Japanese, Simplified and Traditional Chinese, Korean, etc
- Versatile Group Permissions System: Powerful and user-friendly permissions system which enables administrators to set permissions by group
- Theme-based skinnable interface: XOOPS is driven by a powerful theme system. Both administrators and users can change the look of the entire web site with just a click of a mouse.

Requirements:
- PHP 5.2 or Higher
- MySQL 5.0 or Higher

What's New in this version:
Security fixes:
- XSS (Cross Site Scripting) vulnerability in PM module and TinyMCE.

Updated:
- HTML Purifier to 4.4.0
- TinyMCE to 3.4.9
- jQuery to 1.72
- jQueryUI to version 1.8.18
- phpThumb to 1.7.11
- jGrowl to 1.2.6