- PHP;
- Symfony Framework;
- Apache webserver, nginx for static pages;
- MySQL database & Redis (for temporary background data that synchronizes with MySQL);
- Cache – Redis, Redis.io;
- Search – SphinxSE RT;
- Socket.io (WebSocket) for permanent connection (chat, new message alert, telling if user is online)
- Chat – COMET;
- Testing – Codeception Framework (functional, unit tests), codeception.com;
- Deployment – Capifony, capifony.org.