Comment by nodar86
8 months ago
Hey! I have an open-source project for browsing an exported slack archive, it may be useful to you so you can see and search the history: https://github.com/pkarolyi/slack-archive-browser
I haven’t maintained it in a while since it works for us, but PRs are welcome :)
A good first one would be adding non-slack authentication as currently it only supports Slack openid for logging in, but it uses next-auth and should be simple to extend
Mattermost also has a tutorial to import your slack messages
https://docs.mattermost.com/administration-guide/onboard/mig...
I have been running a Mattermost instance with a few thousand users for years now.
It really hasn’t required any maintenance at all beyond incrementing the version number.
They are starting to tighten the screws (showing admins a warning if you have over 2500 users), but it’s still looking good for a few years before I need to act on that.
Notably, Mattermost can be forked to a community edition if the team behind it does anything too user-hostile. It's a fine balance for them to keep their "team edition" nudging users to a supported edition without being so annoying that users are motivated to make that community edition.
I have other reasons to want a community edition personally, but sadly they've been successful enough thus far that there isn't enough interest from other developers to make it happen.
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From one walled garden to another?
You can self-host it.
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