Limny 4, the latest version works with PHP 5.4+ and uses MySQL database to store data. Along with strong, fast and developing core, It has a rich source codes and libraries for developing addons easier and faster. All accessibilities to pages is managed under Roles management and each role is fully permissible. Latest version is optimized for right-to-left languages such as Persian, Arabic, Hebrew.

less memory usage
faster than older versions

Free & Open-Source
Yes, It's free and released under GPL license.

Simple & Secure
Protected structure with permissioned user groups.