Slackin is a little server that enables public access to Slack server. It is like Freenode but on Slack.

Slackin - Public Slack organizations made easy

Tinode is a  Instant Messaging Server. It is not XMPP/Jabber. It is not compatible with XMPP. It's meant as a replacement for XMPP. On the surface, it's a lot like open source WhatsApp or Telegram. The goal of this project is to deliver on XMPP's original vision: create a modern open platform for federated instant messaging with an emphasis on mobile communication. A secondary goal is to create a decentralized IM platform that is much harder to track and block by the governments.

Tinode - Instant Messaging Server


Element is a messaging app that lets you chat securely with your family and friends. The communication is default end-to-end encrypted, cross-signed device verification and decentralisation to choose who you trust with your data. Element is unique. You own your data and decide where it lives. Element lets you talk securely to anyone, regardless of their app. It supports unlimited voice, video and messaging. It is built on Matrix.

Element - Secure and independent communication, connected via Matrix

MongooseIM is aimed at large, complex enterprise level projects where real-time communication is critical for business success. It provides high availability, ease of deployment, development and reliability in production. MongooseIM can accept client sessions over vanilla XMPP, Websockets, and HTTP long-polling (a.k.a. BOSH).

MongooseIM - Efficient XMPP server

 Ricochet is an experimental kind of instant messaging that doesn't trust anyone with your identity, your contact list, or your communications. Ricochet is a peer-to-peer instant messaging system built on the Tor Network hidden services. Your login is your hidden service address, and contacts connect to you (not an intermediate server) through Tor. The rendezvous system makes it extremely hard for anyone to learn your identity from your address.

Ricochet - Anonymous peer-to-peer instant messaging

Gajim  is a fully-featured XMPP client. It is decentralized messaging platform, Connect to your contacts using a server of your choice. Share pictures, videos, and files with friends and groups. It is end-to-end encrypted, Chat securely using OMEMO, PGP, or OpenPGP. 

Gajim - A fully-featured XMPP client

Kontalk is run by a community of volunteers offering servers. Both client-to-server and server-to-server channels are fully encrypted. Users can be safe with end-to-end encryption. This is the official Android client for the Kontalk messaging system.

Kontalk - Instant Messaging Network

Prosody is a modern XMPP communication server. It aims to be easy to set up and configure, and efficient with system resources. Additionally, for developers it aims to be easy to extend and give a flexible system on which to rapidly develop added functionality, or prototype new protocols.

Prosody - Modern XMPP communication server

Let's Chat is a persistent messaging application that runs on Node.js and MongoDB. It's designed to be easily deployable and fits well with small, intimate teams. It supports XMPP Multi-user chat (MUC), Multiple rooms, File uploads and lot more.

Lets-Chat - Self-hosted chat for small teams

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