Top 4 Open-Source Alternatives to esimdb

Product categories

Chat Communication Enterprise Communication Enterprise Software Group Chat & Notifications Group Messaging Instant Messaging Internet Calls Messaging VoIP

Summary

The top open-source alternatives to esimdb are Telegram, Signal, and Matrix.org. 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.

Telegram Landing Page
1

Telegram

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Pricing:
- Open Source
#Communication #Messaging #Instant Messaging 128 social mentions
Signal Landing Page
2

Signal

Fast, simple & secure messaging. Privacy that fits in your pocket.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 180 social mentions
Matrix.org Landing Page
3

Matrix.org

Matrix is an open standard for decentralized persistent communication over IP.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 582 social mentions
freepbx Landing Page
4

freepbx

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