XiVO is a scalable platform based on Asterisk that offers a free and complete PBX solution. It is licensed under the GPLv3. An IP-PBX an PBX that provides communication services such audio, video, and instant messaging based on the use of standard network technologies such as the TCP/IP protocol. It is interoperable with most market telephony systems and allows its users to benefit from a set of flexible and advanced services without requiring specialized hardware.
CALLR is a voice and messaging API available through REST, JSON-RPC and SDKs (PHP, Python, Ruby, Go, Node.JS, Swift, Java, .NE ...
Unchained resources : Voximal integrates cloud speech services like Google Speech API, IBM Watson SpeechToText, Azure Bing Sp ...
Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like PB ...
FreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communicatio ...
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 ...
FreeSentral is a full IP PBX consisting of a Linux Distribution, an IP PBX and a Web Graphical User Interface for easy configu ...
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 ...
Incredible PBX is a secure and feature-rich implementation of the Asterisk® PBX. By rethinking the PBX security model from the ...
VoipSwitch is a SoftSwitch System with routing and billing, with SIP protocol support (in older versions also H323). Basic pac ...
Twilio is a web-service API that lets you use your existing web languages and skills to build voice and SMS applications. We f ...
Yate is a softswitch (concept of separating the network hardware from network software). It supports VoIP protocols: H.323, ...
A SIP based implementation of a PBX / unified communications system.