Synapse VS Mattermost

Compare Synapse vs Mattermost and see what are their differences.

Synapse

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

Mattermost

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle.. (by mattermost)
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Synapse Mattermost
371 162
11,720 31,544
- 1.5%
9.8 10.0
about 1 year ago 1 day ago
Python TypeScript
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.

Synapse

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 2025-01-18.
  • Nation-scale Matrix deployments will fail using the community version of Synapse
    13 projects | news.ycombinator.com | 18 Jan 2025
    - They own dendrite, the only matrix server so far that even comes close to spec adherance with synapse, which has been strangled (as evidenced by the last release almost half a year ago [3])

    Because everyone is running synapse, everyone needs to keep running synapse or risk losing compatibility with the federation.

    This is not what the sales brochure for matrix read like. Like, at all.

    Do y'all believe it's random chance that the official synapse docker-compose does not come with async workers? [1]

    And now check out the terrible setup process for setting up the whole "workers magic" (which, mind you, is unavoidable the moment you have some bigger rooms joined) [2] - Like who on this godforsaken planet considers this valid even for 2022? Pair that with how easy to handle the base documentation is and things start to smell. They have the stench of trying to artificially create a moot by making it "too hard for non-pros".

    I understand synapse and dendrite development need funding, but this is not the way to go. All good will towards Element as a steward of matrix I had is completely eroded by now and I assume that will be the case for many others too. Forks are bound to happen at this point and I'm looking forward to the ecosystem become more diverse again.

    [1] https://github.com/matrix-org/synapse/blob/develop/contrib/d...

  • It Matters Who Owns Your Copylefted Copyrights
    2 projects | news.ycombinator.com | 4 Jan 2025
  • The Home Server Journey - 4: Enter The Matrix
    9 projects | dev.to | 20 Sep 2024
    As any open protocol, the Matrix specification has a number of different implementations, most famously Synapse (Python) and Dendrite (Go). I've been, however, particularly endeared to Conduit, a lightweight Matrix server written in Rust. Here I'll show the deployment configuration as recommended by its maintainer, Timo Kösters:
  • Python Has Too Many Package Managers
    5 projects | news.ycombinator.com | 8 Jul 2024
    when we did a comparison of package managers that lock dependencies, we wrote up some interesting notes at https://github.com/matrix-org/synapse/issues/11537#issuecomm...

    Notable omission in pip-tools which many are suggesting here as being simpler: it can't write requirements files for multiple environments/platforms without running it once for each of those environments and having one file for all of them.

    We settled on Poetry at the time but it has been quite unstable overall. Not so bad recently but there were a lot of issues/regressions with it over time.

    For this reason I am happy to see new takes on package management, hopefully some of these will have clearer wins over the others, where you have to spend ages trying to figure out which one will do what you need.

  • Organizing OpenStreetMap Mapping Parties
    8 projects | news.ycombinator.com | 12 Apr 2024
    What are you thinking of here? Synapse has supported purging room history since 2016: https://github.com/matrix-org/synapse/pull/911, and configurable data retention since 2019: https://github.com/matrix-org/synapse/pull/5815.

    Meanwhile, Matrix has never needed the full room history to be synchronised - when a server joins a room, it typically only grabs the last 20 messages. (It does needs to grab all the key-value state about the room, although these days that happens gradually in the background).

    If you're wondering why Matrix implementations are often greedy on disk space, it's because they typically cache the key-value state aggressively (storing a snapshot of it for the room on a regular basis). However, that's just an implementation quirk; folks could absolutely come up with fancier datastructures to store it more efficiently; it's just not got to the top of anyone's todo list yet - things like performance and UX are considered much more important than disk usage right now.

  • GrapheneOS is moving off Matrix
    1 project | news.ycombinator.com | 21 Nov 2023
    some context re the Matrix isses, long history apparently: https://github.com/matrix-org/synapse/issues/14481#issuecomm...
  • Non-profit Matrix.org Foundation seems to be moving funds to for-profit Element
    7 projects | news.ycombinator.com | 19 Nov 2023
    Why not Matrix? Here's one reason: it has incredibly hard-to-debug edge cases, and plenty of bugs. One of my favourites is the one where people are kicked out of your room at random, which was reported a year ago[0]. It wasn't fixed, however, because the head of the Matrix foundation (Matthew) presumably didn't like the issue being posted on Twitter.

    This is honestly really disappointing behaviour from a platform owner.

    [0]: https://github.com/matrix-org/synapse/issues/14481

  • The Future of Synapse and Dendrite
    1 project | news.ycombinator.com | 6 Nov 2023
    > That doesn't make this situation any less bad to the rest of the community.

    How is the community suffering here? Let's say Element adds a bunch of baller stuff to their versions over the next few months and then closes the source. Can't the community just fork the last AGPL version? You might say, "well then no one can take the AGPL fork and make their own closed-source business", but do you want them to? Even if you do, they still can with the existing Apache-licensed version, just like Element is doing right now.

    You're arguing that Element will lose a lot of contributions, but TFA points out that despite being super open, the vast majority of contributions are still made by Element employees (which seems to be true [0]). It's not the case that Element is looking to monetize the (small) contributions of others, it is the case that others are looking to monetize the (huge) contributions of Element.

    And besides, aren't the MSCs the core of Matrix? It's already super possible to build your own compliant client and server.

    The situation is that Element needs money to keep developing the ecosystem. It would be cool if there were a big network of donors and contributions, but there isn't. You're essentially saying, "that's fine, go out of business then, and the community will keep developing the ecosystem", but that's not happening now, and it can still happen anyway with the Apache-licensed versions, which again people can still contribute to.

    [0]: https://github.com/matrix-org/synapse/graphs/contributors

  • Synapse v1.95.0 Released
    1 project | /r/Boiling_Steam | 26 Oct 2023
  • Matrix Synapse how use python scripts?
    2 projects | /r/selfhosted | 6 Oct 2023

Mattermost

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 2025-01-21.
  • Reviving An Outdated Project
    4 projects | dev.to | 21 Jan 2025
    [GH-29548] Avoid SELECT * in `tokens_store.go` #29558
  • Campsite/Campsite: The Campsite Monorepo
    6 projects | news.ycombinator.com | 13 Jan 2025
    Is there an 'open source Slack' type thing anywhere?

    This is the closest I've found- https://mattermost.com/

  • My Goals Working On Open Source
    5 projects | dev.to | 10 Dec 2024
    So far I think I've been doing pretty well. While the scope of my contributions has varied, I've been able to work on a few projects - some larger than others, but all of them being software that people actually use (as opposed to someone's side project): cve-bin-tool, libplanet, ByteChef, Ghostfolio, and Mattermost.
  • Doing More Open Source Stuff: Making Up For Lost Time
    2 projects | dev.to | 9 Dec 2024
    Add timestamp to pasted image filenames to differentiate them #29524
  • From Idea to Startup: How Open Source Tools Can Help You with Setting up Your Business
    2 projects | dev.to | 2 Dec 2024
    Star Mattermost⭐
  • Contributing to Mattermost - I said ":D", not "😄"
    2 projects | dev.to | 1 Dec 2024
    Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. This repo is the primary source for core development on the Mattermost platform; it's written in Go and React and runs as a single Linux binary with MySQL or PostgreSQL. A new compiled version is released under an MIT license every month on the 16th.
  • Going with Mattermost!
    2 projects | dev.to | 25 Nov 2024
    Literally "going" with them this time, since their server is written in Go (I apologize for my hurtful sense of humor). During Hacktoberfest, I worked on their mobile app, which is written in TypeScript using React Native. However, the issue I got this time was related to their server, and this would be my first time working on a Go project.
  • A Surprise from Mattermost!
    1 project | dev.to | 15 Nov 2024
    Turned out it was a gift from Mattermost! It was a custom-made mug with a special thank you message at the back, which was really cool!
  • Hacktoberfest! - Week 4
    4 projects | dev.to | 31 Oct 2024
    This was mentioned in the original issue as well. To be perfectly honest, I missed that part as well.
  • Hacktoberfest! - Week 2
    4 projects | dev.to | 18 Oct 2024
    In case you don't know. Mattermost is an open-source, self-hostable chat service designed for organizations and companies. It's an open source alternative to Slack or Microsoft Teams. For a long time I've seen their name recommended a lot among open source enthusiasts. It's also a huge project. I thought it would be a nice challenge to get involved and contribute. Speaking of challenges, there were quite a few:

What are some alternatives?

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

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

Zulip - Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

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

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

conduit

Element - A glossy Matrix collaboration client for the web.

RetroShare - RetroShare is a Free and Open Source cross-platform, Friend-2-Friend and secure decentralised communication platform.

focalboard - Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.

Node-Chat - :speech_balloon: Chat application built with NodeJS and Material Design

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

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