Free Asterisk Alternatives
The best free alternative to Asterisk is 3CX. If that doesn't suit you, our users have ranked more than 25 alternatives to Asterisk and 16 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Asterisk are FreeSWITCH, Wazo, FusionPBX and Kamailio.
Asterisk alternatives are mainly Text to Speech Services but may also be Phone Systems or Customer Support Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Asterisk.
- Freemium • Proprietary
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- Microsoft Exchange Server
- Raspberry Pi
- Microsoft Office Suite
The 3CX Phone System is the software-based private branch exchange (PBX) Phone system based on the SIP (Session Initiation Protocol) standard and enables extensions to make calls via the public switched telephone network (PSTN) or via Voice over Internet Protocol (VoIP) services...
3CX vs Asterisk opinions
Easy to use, easy to install, feature rich
It's a soft phone, not a VoIP server / exchange
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.
Wazo is mainly an IPBX that provides communication services such audio, video, and instant messaging based on the use of standard network technologies such as the TCP/IP protocol.
FusionPBX is an open source FreeSWITCH GUI.
No screenshots yet
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.
No screenshots yet
Yate is a softswitch (concept of separating the network hardware from network software).
No screenshots yetYate - Yet Another Telephony Engine vs Asterisk opinions
Carrier type services - not targeted as a PBX
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 telephones.
A SIP based implementation of a PBX / unified communications system.
No screenshots yet
- Freemium • Proprietary
- Linux
- Online
- Self-Hosted
- Amazon
- Raspbian
- Raspberry Pi
- Microsoft Azure
- Docker
The voice phone platform based on Asterisk and FreePBX propulsed by Voximal VoiceXML interpreter.
No screenshots yet
sipXcom provides complete enterprise-grade telephony, unified messaging, Instant messaging, audio conferencing, and many other features. sipXcom can be run along side your existing Cisco, Avaya, Mitel, Shortel or other PBX while you migrate users to the sipXcom system.
No screenshots yet