Top 9 Open-Source Alternatives to Telephone

Product categories

Chat Cloud Contact Center Communication Enterprise Communication Enterprise Software Group Chat & Notifications Instant Messaging Messaging VoIP

Summary

The top open-source alternatives to Telephone are Linphone, Asterisk, and Wire. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Linphone Landing Page
1

Linphone

Linphone is an internet phone or Voice Over IP phone (VoIP).
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 4 social mentions
Asterisk Landing Page
2

Asterisk

An open source telephony switching and private branch exchange service for Linux.
Pricing:
- Open Source
#Communication #VoIP #Enterprise Communication 4 social mentions
Wire Landing Page
3

Wire

Private & Secure Messenger
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 14 social mentions
Jami Landing Page
4

J

Jami

Application and Data, Collaboration, and Web and Video Conferencing
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 9 social mentions
Zulip Landing Page
5

Zulip

Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 50 social mentions
Signal Landing Page
6

Signal

Fast, simple & secure messaging. Privacy that fits in your pocket.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 180 social mentions
freepbx Landing Page
7

freepbx

FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).
Pricing:
- Open Source
#Communication #VoIP #Enterprise Communication
Psi+ Landing Page
8

Psi+

Psi+ is a development branch of the Psi XMPP client.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging
Tinode Landing Page
9

Tinode

Tinode Instant Messaging
Pricing:
- Open Source
#Communication #Messaging #Group Chat & Notifications