Synapse VS Mattermost

Compare Synapse vs Mattermost and see what are their differences.


Synapse: Matrix homeserver written in Python 3/Twisted. (by matrix-org)


Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. (by mattermost)
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Synapse Mattermost
295 49
8,859 21,707
2.7% 1.0%
9.9 9.8
4 days ago 10 days ago
Python Go
Apache License 2.0 GNU General Public License v3.0 or later
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of Synapse. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-12-28.
  • Is Signal still good?
    5 projects | | 28 Dec 2021
    I think thats the exactly the point. It depends on how you use it. Matrix is a protocol at first. Your own Community-Matrix-Server without federation is perfect, with federation it could leak some data, depending on what you are doing (but yes, you should be aware of). For the profile data there are options to limit the „leakage“ a bit:
  • My first self hosted Decentralized E2EE communcation server using Matrix
    1 project | | 26 Dec 2021
    NAT is not at all recommended by matrix,
  • Run web interface for matrix-synapse home server.
    2 projects | | 9 Dec 2021
    I found this:
  • Synapse v1.47.1 a fix for a high severity issue
    1 project | | 23 Nov 2021
  • Let’s chat about RCS
    4 projects | | 16 Nov 2021
    Once you have the home server set up and configured (not covered here because it's a process), clone the bridge repo (for instance mautrix-signal and follow the instructions.
  • Matrix Synapse Server on VPN - change domain
    1 project | | 7 Nov 2021
    Is there a way to change the domain name of my existing Matrix Synapse chat Server? Renewal for my domain name is expensive. I'd rather just buy a cheap domain name every year and replace with my new domain name. The only info I could find was this from several years ago:
  • [HELP/BUG] "Homeserver URL does not appear to be a valid Matrix homeserver"
    1 project | | 23 Oct 2021
    ssl_certificate /etc/letsencrypt/live/; ssl_certificate_key /etc/letsencrypt/live/; location / { # If not within location, it would always be executed (return does not work like in programming languages) return 444; } # location /.well-known/matrix/client { default_type application/json; add_header Access-Control-Allow-Origin *; # To work in browser based clients, the file must be served with the appropriate Cross-Origin Resource Sharing (CORS) headers return 200 '{"m.homeserver": {"base_url": ""}}'; } # location /.well-known/matrix/server { default_type application/json; return 200 '{"m.server": ""}'; } }
  • Signal vs Wickr Me
    2 projects | | 8 Oct 2021
    3: you can host your own server and still write with people from other servers. and well...kinda hard to collect data if there's no third-party server to collect said data. can't get more private than that, at least not without going completely p2p. if that's too much work you can still use their default server or any other community hosted server.
  • Removing Spaces?
    1 project | | 6 Oct 2021
    I think it's the same logic as empty rooms. There is an opened issue about that :
  • Chat server that can cluster?
    3 projects | | 26 Sep 2021
    I found this:


Posts with mentions or reviews of Mattermost. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-01-20.

What are some alternatives?

When comparing Synapse and Mattermost you can also consider the following projects:

dendrite - Dendrite is a second-generation Matrix homeserver written in Go!

Zulip - Zulip server and web app—powerful open source team chat

Rocket.Chat - The communications platform that puts data protection first.

Jitsi Meet - Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.

matrix-docker-ansible-deploy - Matrix (An open network for secure, decentralized communication) server setup using Ansible and Docker

fosscord - Fosscord is a free open source selfhostable discord compatible communication platform

Live Helper Chat - Live Helper Chat - live support for your website. Featuring web and mobile apps, Voice & Video & ScreenShare. Supports Telegram, Twilio (whatsapp), Facebook messenger including building a bot.

Vector - A glossy Matrix collaboration client for the web.

Matrix Console Web

Mumble - Mumble is an open-source, low-latency, high quality voice chat software.