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Team Chat & Messaging

Team Chat & Messaging tools -- a subcategory of Communication & Messaging

25 tools 10 SaaS alternatives

Replace Popular SaaS

Cursor

107 alternatives

Firebase

66 alternatives

Discord

37 alternatives

Slack

22 alternatives

Microsoft Teams

19 alternatives

Chanty

14 alternatives

Guilded

10 alternatives

Pumble

8 alternatives

Skype

7 alternatives

Kafka

3 alternatives

25 Tools

Rocket.Chat

45K

Rocket.Chat is an open-source team communication platform that combines messaging, video conferencing, and omnichannel customer engagement in a single self-hosted deployment.

Mattermost

36K

Secure collaboration, workflow and AI on sovereign infrastructure. Operational sovereignty for national security and critical infrastructure.

Zulip

25K

Released under Apache-2.0, Zulip provides team chat app that uses threaded conversations to keep communication organized and efficient on self-hosted...

SimpleX Chat

11K

SimpleX Chat is a Haskell-based application that provides most private and secure chat and applications platform - now with double ratchet E2E encryption.

AutoMQ

9.6K

AutoMQ gives you serverless Kafka alternative built on S3 on your own infrastructure.

Mumble

7.8K

Mumble handles low-latency, high quality voice/text chat software as a self-hosted solution.

Fluxer

7.1K

Fluxer is a TypeScript-based application that provides , instant messaging and VOIP platform.

Spacebar

6.6K

Spacebar is a self-hosted team chat & messaging replacement for Discord and Zoom.

The Lounge

6.2K

The Lounge lets you run modern web-based IRC client entirely on your own server.

Synapse

3.9K

Synapse handles server for, an open standard for decentralized persistent communication as a self-hosted solution.

Converse.js

3.2K

Converse.js lets you run web-based XMPP/Jabber chat client entirely on your own server.

Ergo

3.1K

Ergo is a self-hosted team chat & messaging tool that provides modern IRCv3 server written in Go.

Stoat

2.9K

Self-hosted team chat & messaging tool that provides modern chat platform featuring text channels.

Chitchatter

2.2K

For team chat & messaging, Chitchatter is a self-hosted solution that provides peer-to-peer chat app that is serverless, decentralized, and ephemeral.

Nextcloud Talk

2.1K

Nextcloud Talk is a self-hosted team chat & messaging replacement for Discord and Zoom.

Movim

Movim offers unified communications, device compatibility, xmpp standard as a self-hosted blogging platforms.

Databag

1.4K

Databag gives you federated, end-to-end encrypted messaging service for the web, iOS, and Android, supporting text, on your own infrastructure.

Sharkord

1.2K

Sharkord is a self-hosted team chat & messaging replacement for Discord.

Convos

1.2K

Convos is a self-hosted team chat & messaging tool that provides multi-user IRC client in the browser.

Snikket

401

Snikket lets you run all-in-one Dockerized easy XMPP solution, including web admin and clients entirely on your own server.

positive-intentions Chat

303

For team chat & messaging, positive-intentions Chat is a self-hosted solution that provides decentralized chat in the browser.

Conversations

281

Conversations is a self-hosted team chat & messaging tool that provides XMPP/Jabber client for Android.

Continuwuity

For team chat & messaging, Continuwuity is a self-hosted solution that provides community-driven Matrix homeserver.

TrueConf Server

For team chat & messaging, TrueConf Server is a self-hosted solution that provides corporate messenger for up to 1,000 users.

Virola

Virola gives you secure messaging and collaboration tool on your own infrastructure.

Why Self-Host Your Team Chat?

Slack charges $7.25-12.50 per user per month, Microsoft Teams locks you into the Microsoft ecosystem, and Discord scans all messages for content moderation and advertising. Your team’s internal communications — strategy discussions, code reviews, client conversations, incident responses — represent some of the most sensitive data in your organization. Self-hosted chat keeps all messages on your infrastructure with no per-user fees and no third-party message scanning.

Rocket.Chat is the most feature-rich self-hosted Slack alternative, with channels, threads, direct messages, video calls, file sharing, and an extensive integration marketplace. Mattermost provides a Slack-like experience specifically designed for developer and DevOps teams, with deep integrations for CI/CD, incident management, and code review workflows. Zulip takes a unique approach with topic-based threading — every message belongs to a topic within a channel, making it dramatically easier to follow multiple conversations and catch up after being away.

For privacy-focused communication, SimpleX Chat provides end-to-end encrypted messaging without user identifiers — even the server does not know who is messaging whom. Synapse is the reference Matrix homeserver implementation, enabling federated communication across organizations running their own Matrix servers. Mumble provides low-latency voice chat, originally built for gaming but widely used for team voice communication. The Lounge offers a self-hosted IRC client that stays connected 24/7, while Converse.js and Movim provide XMPP-based messaging. For lighter needs, Chitchatter provides serverless peer-to-peer chat, and Databag offers a minimal self-hosted messenger. Nextcloud Talk integrates chat and video calls directly into Nextcloud.

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