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 RingCentral, FreeSWITCH, FusionPBX and Wazo.

Asterisk alternatives are mainly Phone Systems but may also be Text to Speech Services or Help Desk Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Asterisk.

Asterisk alternatives page was last updated

Asterisk

Free • Open Source

Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like...

More about Asterisk

3CX
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Mac
Windows
Linux
Online
Android
iPhone
Android Tablet
iPad
Self-Hosted
Microsoft Exchange Server
Raspberry Pi
Microsoft Office Suite
34 3CX alternatives
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 is the most popular Web-based, Windows, Android & Mac alternative to Asterisk.
- - 3CX is the most popular free alternative to Asterisk.
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3CX Features
Multiple languages
Remote Work
Integrated File Sharing
Integrated Chat
Live polling
Video Conferencing
Voice Chat
SIP
Comments about 3CX as a Alternative to Asterisk
Some users think 3CX is a great Asterisk alternative, some don't.
Guest
Easy to use, easy to install, feature rich
Positive comment•
7

Guest
It's a soft phone, not a VoIP server / exchange
Negative comment•
-21
RingCentral
Is this is a good alternative?
Yes
No
Free Personal • Proprietary
Phone System
Video Calling App
Web Conferencing Tool
Mac
Windows
Online
Android
iPhone
iPad
Web Browser
Software as a Service (SaaS)
96 RingCentral alternatives
Meet the world's leading cloud phone system — reimagined with powerful intelligence, workflow automation, video, messaging, and more. RingCentral MVP integrates phone, video, meetings, and messaging in one reliable, easy-to-use solution.
- - RingCentral is the most popular SaaS alternative to Asterisk.
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RingCentral Features
1. Sync with Google CalendarRingCentral can be synchronized with Google Calendar
2. Ad-freeRingCentral doesn't contain any form of external advertising.
3. Support for ThemesYou can use themes and templates to change the look and feel of RingCentral.
4. Calendar IntegrationRingCentral lets you sync your tasks and events with your calendar application.
5. Desktop SharingRingCentral enables you to share your screen with other people in the same office or working remotely.
6. Support for @mentionsRingCentral supports the use of mentions through @ to a particular user, who will be notified personally.
7. AES-256 EncryptionRingCentral has AES-256 Encryption, i.e. very strong security.
8. Privacy focusedRingCentral is considered a privacy friendly alternative.
9. Screen SharingYou can use RingCentral to share your screen with your colleages or friends.
Unified messaging
Phone calls
Real time collaboration
Dark Mode
SMS Messaging
Team Messaging
VoiP Calls
End-to-End Encryption
Extensible by Plugins/Extensions
No registration required
FreeSWITCH
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
BSD
24 FreeSWITCH alternatives
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 is the most popular Open Source alternative to Asterisk.
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FreeSWITCH Features
Voice Chat
FusionPBX
Is this is a good alternative?
Yes
No
Free • Open Source
Linux
BSD
12 FusionPBX alternatives
FusionPBX is an open source FreeSWITCH GUI. FusionPBX can be used as a high available single or domain based multi-tenant PBX, carrier grade switch, call center server, fax server, voip server, voicemail server, conference server, voice application server, appliance framework...
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FusionPBX Features
Graphical User Interface
Voice Chat
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Wazo
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
Self-Hosted
36 Wazo alternatives
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. It is interoperable with most market telephony systems and gives users access to flexible and...
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Wazo Features
1. Extensible by Plugins/ExtensionsWazo can be extended with add-ons, plugins and extensions.
Web-Based
SIP
Yate - Yet Another Telephony Engine
Is this is a good alternative?
Yes
No
Free • Open Source
Linux
30 Yate - Yet Another Telephony Engine alternatives
Yate is a softswitch (concept of separating the network hardware from network software).
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Yate - Yet Another Telephony Engine Features
Voice Chat
SIP
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Comments about Yate - Yet Another Telephony Engine as a Alternative to Asterisk
pros, cons and recent comments
Guest
Carrier type services - not targeted as a PBX
Negative comment•
0
Kamailio
Is this is a good alternative?
Yes
No
Free • Open Source
Linux
19 Kamailio alternatives
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: asynchronous TCP, UDP and SCTP, secure communication via TLS for VoIP (voice, video); WebSocket support for...
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Kamailio Features
1. VoiP CallsKamailio allows you to make voice calls over Internet using the Voice over Internet Protocol (VoIP).
SIP
Voice Chat
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XiVO
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
30 XiVO alternatives
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.
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XiVO Features
Voice Chat
sipXecs
Is this is a good alternative?
Yes
No
Free • Open Source
Linux
14 sipXecs alternatives
A SIP based implementation of a PBX / unified communications system.
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sipXecs Features
SIP
Voice Chat
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The Voximal stack
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Text to Speech Service
Linux
Online
Self-Hosted
Raspbian
Raspberry Pi
Microsoft Azure
Docker
22 The Voximal stack alternatives
The voice phone platform based on Asterisk and FreePBX propulsed by Voximal VoiceXML interpreter.
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The Voximal stack Features
1. Text to SpeechThe Voximal stack allows you to transform written text into spoken text.
Voice Chat
IVR
Speech Recognition
Voice recognition
Natural Language Processing
Chat Bot
SIP
Flexisip
Is this is a good alternative?
Yes
No
Free • Open Source
Linux
4 Flexisip alternatives
SIP proxy server implementation compliant to RFC3261, written in C++11 started in 2011.
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Flexisip Features
SIP
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sipXcom
Is this is a good alternative?
Yes
No
Free • Open Source
Linux
22 sipXcom alternatives
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.
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sipXcom Features
SIP
Virtual PBX
Conference Bridging
Integrated Chat
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