Top 12 Open-Source Alternatives to Google Voice

Product categories

CRM CRM Platforms Call Center Software Call Management Chat Cloud Contact Center Communication Enterprise Communication Group Chat & Notifications Instant Messaging Messaging VoIP

Summary

The top open-source alternatives to Google Voice are RingCentral, Signal, and Telegram. 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.

RingCentral Landing Page
1

RingCentral

RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
Pricing:
- Open Source
- Freemium
- Free Trial
- $19.99 / Monthly (All-in-One Phone, Team Messaging, and Video Conferencing.)
#Communication #VoIP #Cloud Contact Center 3 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
Telegram Landing Page
3

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
Asterisk Landing Page
4

Asterisk

An open source telephony switching and private branch exchange service for Linux.
Pricing:
- Open Source
#Communication #VoIP #Enterprise Communication 4 social mentions
CloudTalk Landing Page
5

CloudTalk

Work locally, grow globally
Pricing:
- Open Source
- Paid
- Free Trial
- $25.0 / Monthly
#Communication #Enterprise Communication #Call Center Software
2nd Number Landing Page
6

2nd Number

2nd number lets you call and text to US & Canada at low rates. Make private calls, send texts, and connect internationally using your data or WiFi.
Pricing:
- Open Source
- Freemium
- Free Trial
- $10.0 / Monthly
#Communication #Telecommunications #Cloud Business Telephony
Linphone Landing Page
7

Linphone

Linphone is an internet phone or Voice Over IP phone (VoIP).
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 4 social mentions
Twilio Landing Page
8

Twilio

Brings voice and messaging to your web and mobile applications.
Pricing:
- Open Source
#Communication #Cloud Communications #Customer Engagement
Lumicall Landing Page
9

Lumicall

Free calls using open technology on Android.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging
Bitrix24 Landing Page
10

Bitrix24

Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
Pricing:
- Open Source
- Freemium
- Free Trial
- $69.0 / Monthly (6 users / 50 GB / CRM+)
#Project Management #Task Management #Communication
Wire Landing Page
11

Wire

Private & Secure Messenger
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 14 social mentions
Zulip Landing Page
12

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