spreed VS Mattermost

> Tell me another platform that is free, has realtime chat, voice and video, has stable service, allows sharing images and other media, with good ownership management... and is open source.

Mattermost: https://mattermost.com/

Rocket.Chat: https://www.rocket.chat/

Nextcloud Talk: https://nextcloud.com/talk/

Self hosting and some assembly required. I've run all of them on cheap VPSes to explore a Slack/Discord replacement, neither was mindblowing but all of them seemed okay (Nextcloud's offering was rather barebones, though).

Audio and video support varies because getting those right is challenging, at best you'd just integrate with something like Jitsi, that one's actually pretty good for meetings and such: https://jitsi.org/ and has a cloud version too: https://meet.jit.si/ (yet people still go for Zoom and it's odd UI/UX choices)

I actually rather liked forums back in the day, but I guess nobody will be setting up that many phpBB instances in the current year, though projects like Discourse also seem promising: https://www.discourse.org/

I don't think many people at all will be leaving Discord, due to how entrenched the platform is (network effect): if you want people to help you with what you're working on, you go where they are, not vice versa.

To add to this, it's reasonably easy to run, and has many different plugins, from a calendar and contacts list, to an online document editor (like Google Docs, except it can be pretty slow and/or resource intensive: https://nextcloud.com/office/), to a simple clone of Slack (https://nextcloud.com/talk/), a mail client (https://apps.nextcloud.com/apps/mail) and other things.

That said, I've had updates (across major versions) break things on multiple occasions, one out of two servers running the exact same version has random crashes and in addition to that the file locking by default (if enabled, but not using Redis: https://docs.nextcloud.com/server/latest/admin_manual/config...) has broken and prevents me from deleting a file that just sits there and takes up a few GB of space. Oh and their Android app fails to upload files if I use the share option, instead of the file picker from within the app.

On the other hand, sure beats storing data on third party clouds and is free, so I'll still keep using it.

> The calendar app is very functional and allows booking of appointments based on availability similar to Calendly. This is one of many apps within its large and expanding suite.

Another noteworthy one is Talk: https://nextcloud.com/talk/

It's not quite as good as something like a self-hosted instance of Mattermost or even Rocket.Chat, but honestly if you already have Nextcloud, then it's pretty cool to be able to get something decent like that up and running quickly.

Ofc that's making Nextcloud a single point of failure in some ways and occasionally things can go sideways with these plugin based platforms (historically applies more to installs of Jenkins, but also have had some performance issues with Nextcloud that had lots of apps, too).

I still rather like Nextcloud because of being able to just run it on my servers and replace a bunch of other third party cloud platforms and still somehow manage to have good enough uptime and security.

Internal chat/communication

Nextcloud Talk (version 15.0.3): Have private video calls and chat using your own server.

Nextcloud Talk

Nextcloud has a chat app https://nextcloud.com/talk/

Nextcloud with the Talk extension can do exactly what you are looking for! https://nextcloud.com/talk/

> Tell me another platform that is free, has realtime chat, voice and video, has stable service, allows sharing images and other media, with good ownership management... and is open source.

Mattermost: https://mattermost.com/

Rocket.Chat: https://www.rocket.chat/

Nextcloud Talk: https://nextcloud.com/talk/

Self hosting and some assembly required. I've run all of them on cheap VPSes to explore a Slack/Discord replacement, neither was mindblowing but all of them seemed okay (Nextcloud's offering was rather barebones, though).

Audio and video support varies because getting those right is challenging, at best you'd just integrate with something like Jitsi, that one's actually pretty good for meetings and such: https://jitsi.org/ and has a cloud version too: https://meet.jit.si/ (yet people still go for Zoom and it's odd UI/UX choices)

I actually rather liked forums back in the day, but I guess nobody will be setting up that many phpBB instances in the current year, though projects like Discourse also seem promising: https://www.discourse.org/

I don't think many people at all will be leaving Discord, due to how entrenched the platform is (network effect): if you want people to help you with what you're working on, you go where they are, not vice versa.

Mattermost, Inc. | Senior React Native Engineer | REMOTE (US Only) | Full-Time

At Mattermost we build an open core, chat and collaboration platform focused on making users with mission critical work more productive while also allowing our customers to self-deploy and have full control over their own data.

We’re looking for a Senior React Native Engineer who has the depth to significantly move the performance needle of our app while also having the breadth to contribute across our stack.

Check out our open source mobile codebase: https://github.com/mattermost/mattermost-mobile. Meta uses the Mattermost RN app as the benchmark for performance testing of their Hermes JS engine: https://mattermost.com/blog/hermes-mattermost/. Want to set the bar for what a complex, high performing React Native app can do? Want to do it open source? Join our team!

Apply here: https://jobs.lever.co/mattermost/a38ea8f0-6c27-4178-a988-801...

Mattermost for Chat, and also for Notifications sent by Uptime-Kuma

Mattermost offers a secure, open-source solution for seamless collaboration throughout the software development lifecycle. Tailored to cater to technical and operational needs, it easily integrates with a wide range of third-party developer tools—to streamline development and engineering workflows. With self-hosted and private cloud deployment options, coupled with access to the source code, you have complete control over the data via a shared, adaptable, and extensible platform designed specifically for your team. Kindly suggested by Molasses_Major.

FWIW, most of the TypeScript lines of code are in the E2E tests[0] and the webapp dir [1], which, as the name suggests, contains "the client code for the Mattermost web app". So we should really only be counting lines of Go code.

[0] https://github.com/mattermost/mattermost/tree/master/e2e-tes...

[1] https://github.com/mattermost/mattermost/tree/master/webapp

Mattermost is an good alternative to companies, workers and teams.

oder auch Mattermost

Revolt, Guilded, Element (Matrix Client), Matrix, Cinny (Matrix Client), Spacebar, Rocket Chat, Mikoto, Mattermost, Teamspeak and Nertivia

might be overkill but https://mattermost.com/

But it seems that you're right for Mattermost.