InstantCMS

Is a free open source CMS (content management system) that allows you to build websites for any purpose

Key features

• Free & open source (GNU/GPL v2);
• Any content types;
• Powerful social networking platform;
• Extremely easy to extend;
• Templates and plugins;
• Powerful admin dashboard;
• SEO tools included;
• Mobile friendly template;
• Multilingual CMS interface;
• User management;
• Easy-to-install core updates.

Requirements

• PHP 5.3+
• PHP register_globals off
• PHP magic_quotes_gpc off
• GD, iconv, mbstring, simplexml, json and filter PHP extension
• Mysql 5.0 or above and its support in PHP
• Apache + mod_rewrite + (MultiViews option disabled)

Resources

• Official site
• Add-ons for CMS
• Documentation
• Russian README