Top 10 Open-Source Alternatives to Chapp

Chapp

Real-time, topic-based chat (long live IRC!).

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Product categories

Communication Messaging Instant Messaging Group Chat & Notifications AI Productivity AI Assistant AI Tools Chat SDK Chatbots Group Messaging Internet Calls

Summary

The top open-source alternatives to Chapp are Discord, Rocket.Chat, and The Lounge. 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.

Discord Landing Page
1

Discord

Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.
Pricing:
- Open Source
#Instant Messaging #Messaging #Communication 141 social mentions
Rocket.Chat Landing Page
2

Rocket.Chat

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Pricing:
- Open Source
#Instant Messaging #Messaging #Communication 68 social mentions
The Lounge Landing Page
3

The Lounge

The Lounge is a web IRC client that you host on your own server.
Pricing:
- Open Source
#Instant Messaging #Messaging #Communication 47 social mentions
Chat by Stream Landing Page
4

Chat by Stream

Build and ship in app messaging in a few hours
Pricing:
- Open Source
#Messaging #Communication #Voice And Messaging API 40 social mentions
Telegram Landing Page
5

Telegram

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Pricing:
- Open Source
#Instant Messaging #Messaging #Internet Calls 139 social mentions
Signal Landing Page
6

Signal

Fast, simple & secure messaging. Privacy that fits in your pocket.
Pricing:
- Open Source
#Instant Messaging #Messaging #Communication 188 social mentions
OpenClaw Landing Page
7

OpenClaw

The AI that actually does things. Your personal assistant on any platform.
Pricing:
- Open Source
#Productivity #AI #Programming Tools 42 social mentions
Kiwi IRC Landing Page
8

Kiwi IRC

A hand-crafted IRC client that you can enjoy. Designed to be used easily and freely.
Pricing:
- Open Source
#Instant Messaging #Messaging #Communication 6 social mentions
Typing Mind Landing Page
9

Typing Mind

A Better UI for ChatGPT
Pricing:
- Open Source
#Productivity #Chatbots #AI 4 social mentions
Zulip Landing Page
10

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
#Instant Messaging #Messaging #Communication 67 social mentions