MXpbx is a fork from FreePBX, the open source PHP GUI for Asterisk.
This project intend to make a free multi-tenant asterisk GUI. Multiple companies and organizations can share the same PBX box as if they have installed FreePBX on their own host. Companies and organizations can communicate with each other for free over VoIP, and connect to their own VSP (VoIP service provider).
This project is the contribution from QIS Technologies, JSC, a VoIP company in Vietnam.
Homepage : http://qistechnologies.com