Top 12 Open-Source Alternatives to Clockwork SMS

Product categories

API Chat SDK Communication Customer Engagement Enterprise Communication Group Chat & Notifications Instant Messaging Messaging Telecommunications Video Conferencing VoIP Web And Video Conferencing

Summary

The top open-source alternatives to Clockwork SMS are Twilio, Melrose Labs SMSC Simulator, and Maytapi. 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
Melrose Labs SMSC Simulator Landing Page
2

Melrose Labs SMSC Simulator

SMPP SMSC simulator to test SMS messaging applications.
Pricing:
- Open Source
- Freemium
- Free Trial
#Messaging #Communication #Text Messaging
Maytapi Landing Page
3

Maytapi

Serverless Whatsapp Api with Chat and Agent support.
Pricing:
- Open Source
#Messaging #API #API Tools 1 social mentions
MirrorFly Landing Page
4

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
WhatsApp Web Landing Page
5

WhatsApp Web

A WhatsApp client for web
Pricing:
- Open Source
#Communication #Messaging #Group Chat & Notifications 180 social mentions
Telegram Landing Page
6

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 129 social mentions
SignalWire Landing Page
7

SignalWire

A next-generation communications API and collaboration platform. Powered by a global elastic cloud network featuring APIs for video, voice, messaging, and collaboration products like SignalWire Work, SignalWire Events, and more.
Pricing:
- Open Source
- Paid
- Free Trial
#Telecommunications #Web And Video Conferencing #Video Conferencing 3 social mentions
RingCentral Landing Page
8

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
OpenTok Landing Page
9

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
Signal Landing Page
10

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
11

freepbx

FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).
Pricing:
- Open Source
#Communication #VoIP #Enterprise Communication
Wazo Landing Page
12

Wazo

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