Asterisk Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like PBX, VoIP gateway, IVR and ACD. Free Open Source Mac OS X Windows Linux Low level Add a feature 31 Like
freepbx FreePBX is a web-based open source GUI (graphical user interface) that controls and manages Asterisk (PBX), an open source communication server. Free Open Source Linux Voice Call Add a feature 7 Like
Issabel Your Open Source Solution For Unified Comunnications And More… Issabel™ is a free and open source software that allows you to build communication tools for businesses. Free Open Source Linux No features added Add a feature 5 Like
Yate - Yet Another Telephony Engine Yate is a softswitch (concept of separating the network hardware from network software). It supports VoIP protocols: H.323, SIP, IAX1, IAX2, RTP. For the plain old... Free Open Source Linux No features added Add a feature 7 Like
Elastix Elastix is an open source Unified Communications Server software that brings together IP PBX, email, IM, faxing and collaboration functionality. It has a web interface... Freemium Linux No features added Add a feature 8 Like
MiRTA PBX The most advanced interface for managing Asterisk PBX with Multitenant and Realtime capabilities. Commercial Linux No features added Add a feature 0 Like
Kamailio Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under GPL, able to handle thousands of call setups per second. Among features:... Free Open Source Linux No features added Add a feature 2 Like
Zent.io Zent.io is a Contact Center Cloud Software Multichannel that unify chat, phone and e-mail. All the communication channels will be answered from a single interface. The... Commercial $ $ $ Mac Windows Linux Web Call recording Customer Chat Knowledge base Real time collaboration Add a feature 33 Like
Thirdlane Multi Tenant PBX Thirdlane® Multi Tenant PBX Platform is a reliable, cost-effective Multi Tenant IP PBX and Unified Communications software platform with support for voice... Commercial Linux Multi-Tenant Add a feature 1 Like
sipXcom sipXcom provides complete enterprise-grade telephony, unified messaging, Instant messaging, audio conferencing, and many other features. Free Open Source Linux Conference Bridging Integrated Chat Add a feature 9 Like
