31 Like Asterisk Good alternative? YES NO 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 Windows Linux Low level Add a feature
12 Like FreeSWITCH Good alternative? YES NO FreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communication protocols using audio, video, text or any... Free Open Source Mac Windows Linux BSD No features added Add a feature
7 Like 3CX Phone System Good alternative? YES NO 3CXPhone is a free VoIP phone available for Windows, iPhone or any Android based smart phone such as Google Nexus, Sony Xperia, Motorola Droid or Samsung Galaxy. Connect... Freemium Windows Android iPhone No features added Add a feature
26 Like Zent.IO Good alternative? YES NO 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 Web Call recording Customer Chat Knowledge base Real time collaboration Add a feature
3 Like sipXecs Good alternative? YES NO A SIP based implementation of a PBX / unified communications system. Free Open Source Linux No features added Add a feature
2 Like Wazo Good alternative? YES NO Wazo is a unified communications platform based on Asterisk and focused on extensibility. Free Open Source Mac Windows Linux Self-Hosted Extensible by Plugins/Extensions Add a feature
7 Like Yate - Yet Another Telephony Engine YES NO 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
2 Like kamailio Good alternative? YES NO 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
3 Like XiVO Good alternative? YES NO 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 Windows Linux No features added Add a feature
0 Like Cloud Telephony Good alternative? YES NO The main purpose of cloud telephony is connecting with the customers for providing your services support. IVR is the software which is used for the cloud telephony. Commercial Web IVR Add a feature
0 Like MiRTA PBX Good alternative? YES NO The most advanced interface for managing Asterisk PBX with Multitenant and Realtime capabilities. Commercial Linux No features added Add a feature
0 Like Mizutech VoIP Server Good alternative? YES NO A robust SIP/H.323/WebRTC softswitch for Windows with a long list of features including PBX and billing. Free Windows No features added Add a feature
0 Like Ozeki Phone Systems Good alternative? YES NO Ozeki Phone System XE is a Software PBX telephony platform for Windows. Ozeki enables your applications to connect PBX and access IVR, Webphone, SMS sending, 3D video... Commercial Windows IVR Video calling Add a feature
0 Like Starfish PBX Good alternative? YES NO Starfish PBX aims to be an open source alternative to Digium’s Switchvox. The goal is to have a software equivalent to which we can add additional functionality like: ... Free Open Source Linux No features added Add a feature
