Top 9 Open-Source Alternatives to CALLR

CALLR

CALLR is an extremely helpful app for those who have to deal with call control protocols for their business. You can create a customized call control system that will perform a wide range of functions.

Product categories

API API Tools Chat SDK Cloud Contact Center Communication Customer Engagement Enterprise Communication Group Chat & Notifications Messaging VoIP Voice And Messaging API Web And Video Conferencing

Summary

The top open-source alternatives to CALLR are Twilio, OpenTok, and MirrorFly. 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.

Twilio Landing Page
1

Twilio

Brings voice and messaging to your web and mobile applications.
Pricing:
- Open Source
#Communication #Cloud Communications #Customer Engagement
OpenTok Landing Page
2

OpenTok

Build a custom video experience using our robust APIs, or add plug-and-play video to your website in minutes using Video Chat Embeds. Start Building for FreeTalk to SalesTalk to Sales .
Pricing:
- Open Source
#Communication #Messaging #Cpaas
MirrorFly Landing Page
3

MirrorFly

World's Most Scalable Voice, Video & Chat SDK for Small, Medium & Enterprises
Pricing:
- Open Source
- Paid
- Free Trial
#Communication #Chat SDK #Group Chat & Notifications 8 user reviews
RingCentral Landing Page
4

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
Asterisk Landing Page
5

Asterisk

An open source telephony switching and private branch exchange service for Linux.
Pricing:
- Open Source
#Communication #VoIP #Enterprise Communication 4 social mentions
GetStream.io Landing Page
6

GetStream.io

APIs for the development of scalable newsfeeds and chat applications.
Pricing:
- Open Source
- Paid
#APIs #Voice And Messaging API #Stream Processing 28 social mentions
Wazo Landing Page
7

Wazo

Wazo is a unified communications platform based on Asterisk and focused on extensibility.
Pricing:
- Open Source
#Communication #VoIP #Enterprise Communication
Zulip Landing Page
8

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
Maytapi Landing Page
9

Maytapi

Serverless Whatsapp Api with Chat and Agent support.
Pricing:
- Open Source
#Messaging #API #API Tools 1 social mentions