FreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communication protocols using audio, video, text or any other form of media. It was created in 2006 to fill the void left by proprietary commercial solutions. FreeSWITCH also provides a stable telephony platform on which many telephony applications can be developed using a wide range of free tools.
Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under GPL, able to handle thousands of c ...
uSipSwitch a micro sip switch (sip proxy) perfect for edge SIP SBC work (e.g. hosted PBX business). Comes with web console and ...
FreePBX is a web-based open source GUI (graphical user interface) that controls and manages Asterisk (PBX), an open source com ...
Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like PB ...
PBX in a Flash is a PBX system based on Asterisk, FreePBX and CentOS, coming as an ISO download. A two stage installation proc ...
Wazo is mainly an IPBX that provides communication services such audio, video, and instant messaging based on the use of stand ...
Starfish PBX aims to be an open source alternative to Digium’s Switchvox. The goal is to have a software equivalent to which w ...
3CXPhone is a free VoIP phone available for Windows, iPhone or any Android based smart phone such as Google Nexus, Sony Xperia ...
Elastix is an open source Unified Communications Server software that brings together IP PBX, email, IM, faxing and collaborat ...
AsteriskNOW is the fastest way to get started building custom telephony solutions with Asterisk. Simply download the .iso file ...
VoipSwitch is a SoftSwitch System with routing and billing, with SIP protocol support (in older versions also H323). Basic pac ...
OpenSIPS (Open SIP Server) is a mature Open Source implementation of a SIP server. OpenSIPS is more than a SIP proxy/router as ...
Yate is a softswitch (concept of separating the network hardware from network software). It supports VoIP protocols: H.323, ...
Zent.io is a Contact Center Cloud Software Multichannel that unify chat, phone and e-mail. All the communication channels will ...
XiVO is a scalable platform based on Asterisk that offers a free and complete PBX solution. It is licensed under the GPLv3. A ...