Elastix

Elastix is an open source Unified Communications Server software that brings together IP PBX, email, IM, faxing and collaboration functionality.

Freemium Linux

AsteriskNOW

AsteriskNOW is the fastest way to get started building custom telephony solutions with Asterisk. Simply download the .iso file, burn it to a CD, drop it into the CD or...

Free Linux

Wazo

Wazo is a unified communications platform based on Asterisk and focused on extensibility.

Free Open Source Mac OS X Windows Linux Self-Hosted

XiVO

XiVO is an IP-PBX, a unified communications platform that connects phones on a local or private network with other networks such as public landlines and mobile...

Free Open Source Mac OS X Windows Linux

Ombutel

Ombutel is a full-feature PBX (phone system) based on Linux and Asterisk. Ombutel is extremely easy to use, fast and secure. Ombutel is free to use, including for...

Free Linux

PBX in a Flash

PBX in a Flash is a PBX system based on Asterisk, FreePBX and CentOS, coming as an ISO download. A two stage installation process allows for more flexibility for the...

Free Open Source Linux

FreeSENTRAL

FreeSentral is a full IP PBX consisting of a Linux Distribution, an IP PBX and a Web Graphical User Interface for easy configuration

Free Open Source Mac OS X Windows Linux

Taridium ipbx

The Taridium ipbx is a complete software-based VoIP PBX system that replaces traditional proprietary hardware PBX. ipbx runs on an open source operating system (Linux)...

Freemium Linux iPhone