Top 12 Open-Source Alternatives to Hack Chat

The top open-source alternatives to Hack Chat are Mattermost, Lets Chat, and Rocket.Chat. 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.

Mattermost Landing Page
1

Mattermost

Mattermost is an open source alternative to Slack.
Pricing:
- Open Source
#Team Collaboration #Work Collaboration #Web And Video Conferencing 59 social mentions
sdelements.github.io
2

Lets Chat

Open source self-hosted chat app for small teams
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Team Collaboration 1 social mentions
Rocket.Chat Landing Page
3

Rocket.Chat

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Chat 65 social mentions
Signal Landing Page
4

Signal

Fast, simple & secure messaging. Privacy that fits in your pocket.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 180 social mentions
ejabberd Landing Page
5

ejabberd

ejabberd is a robust, massively scalable and extensible XMPP server.
Pricing:
- Open Source
#Group Chat & Notifications #Web And Application Servers #Communication 2 social mentions
Discord Landing Page
6

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
#Communication #Group Chat & Notifications #Messaging 122 social mentions
RingCentral Landing Page
7

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
ejabberd SaaS Landing Page
8

ejabberd SaaS

Realtime XMPP and MQTT Software and Infrastructure as a Service.
Pricing:
- Open Source
#Group Chat & Notifications #Communication #Chat
Matrix.org Landing Page
9

Matrix.org

Matrix is an open standard for decentralized persistent communication over IP.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Instant Messaging 582 social mentions
Prosody Landing Page
10

Prosody

Prosody is a modern flexible communications server for Jabber/XMPP written in Lua.
Pricing:
- Open Source
#Group Chat & Notifications #Communication #Chat 15 social mentions
LAN Messenger Landing Page
11

LAN Messenger

LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Work Collaboration
Converse.JS Landing Page
12

Converse.JS

A free and open-source chat client for your website
Pricing:
- Open Source
#Customer Support #Communication #Group Chat & Notifications 9 social mentions