VICIdial Contact Center Suite
IGSuite is a web-ajax-based Integrated Groupware Suite
Standalone chat system developed in php, mysql and javascript
The most affordable CRM system according to Capterra
professional CRM and groupware service, ready for the cloud
OpenSource Call Center and Dialer System
Project Collaboration simplified
Discuz! X2 - русская локализация
A secure implementation of GWT Client / Support Agent chat