Gleez CMS
A Light, Simple, Flexible Content Management System
... suitable for any business or organization. Built on the PHP programming language and the MySQL database, Gleez delivers superb performance on any size application. Gleez uses the MPTT system for classifying content, which is known as taxonomy and is implemented in the core. You can define your own vocabularies (groups of taxonomy terms), and add terms to each vocabulary. Users, Roles, and Permissions. Users on your site can be assigned permissions via roles.