Tinode
Matrix & XMPPOpen-source instant messaging server
Replaces WhatsApp, Slack
Best API Matrix & XMPP for self-hosting
The 13 best API matrix & xmpp you can self-host, ranked by community traction.
ejabberd
Matrix & XMPPRobust, scalable XMPP messaging server
Replaces Slack, WhatsApp
mautrix-whatsapp
Matrix & XMPPMatrix-WhatsApp puppeting bridge
Replaces WhatsApp official client
MongooseIM
Matrix & XMPPScalable, robust XMPP messaging platform
Replaces Slack, WhatsApp
Maubot
Matrix & XMPPPlugin-based bot framework for Matrix chat rooms
Replaces Slack bots
matrix-nio
Matrix & XMPPPython library for building Matrix clients and bots
Replaces Slack bot SDK
mautrix-discord
Matrix & XMPPMatrix-Discord puppeting bridge
Replaces Discord official client
Mjolnir
Matrix & XMPPModeration bot for Matrix communities
Replaces Discord moderation bots
Construct
Matrix & XMPPHigh-performance Matrix homeserver written in C++
Replaces Slack, Discord
Slidge
Matrix & XMPPXMPP-to-anything puppeteering bridge framework
Replaces Beeper, Matrix bridges
matrix-corporal
Matrix & XMPPReconciliator and gateway for managed Matrix homeservers
Replaces Slack admin tools
go-sendxmpp
Matrix & XMPPCommand-line tool to send XMPP messages
Replaces Slack incoming webhooks
Simple-Matrix-Bot-Lib
Matrix & XMPPBeginner-friendly framework for Matrix bots
Replaces Slack bot framework
No apps match these filters.
At a glance
| App | Deploy effort | Difficulty | Min. RAM | License | ★ Stars |
|---|---|---|---|---|---|
| Tinode | Under-an-hour setup | Medium | 256 MB | GPL-3.0 | 13,527 |
| ejabberd | Under-an-hour setup | Hard | 512 MB | GPL-2.0 | 6,743 |
| mautrix-whatsapp | Under-an-hour setup | Medium | 256 MB | AGPL-3.0 | 1,905 |
| MongooseIM | Under-an-hour setup | Hard | 1,024 MB | GPL-2.0 | 1,760 |
| Maubot | Under-an-hour setup | Medium | 256 MB | AGPL-3.0 | 901 |
| matrix-nio | Read-the-docs project | Medium | 128 MB | ISC | 709 |
| mautrix-discord | Under-an-hour setup | Medium | 256 MB | AGPL-3.0 | 503 |
| Mjolnir | Under-an-hour setup | Medium | 256 MB | Apache-2.0 | 448 |
| Construct | Read-the-docs project | Hard | 256 MB | BSD-3-Clause | 396 |
| Slidge | Under-an-hour setup | Hard | 256 MB | AGPL-3.0 | 200 |
Quick picks
- Most adopted: Tinode (13,527 GitHub stars).
- Lightest footprint: go-sendxmpp (from 32 MB RAM, against 1,024 MB for the heaviest here).
- Licensing: 5 of 13 use AGPL-3.0; check the rest individually if you plan to modify and redistribute.
Every option here is open-source and self-hostable, tagged API within the matrix & xmpp category. Deploy effort is graded from published container recipes, not vendor claims — see the methodology.