Mandatory:

- Operating System: Linux [any distribution], Mac OS X

- Languages: php v5.0 or greater

- Web Server: Apache with mod_rewrite [required for friendly URLs functionality]

- SQL compatible database [Oracle, DB2, Cloudscape, MySQL, PostgreSQL, MSSQL].

- Content manager: any modern web browser [Internet Explorer, Firefox, Safari, Opera, etc.]

Optional:

- Zend platform [recommended for clustering and performance reporting]

Note: TreePath CMS works best on Apache web server with php installed as module.