Mattermost

Great user acceptance and ease of use

Avantages :

The interface is pretty much self-explanatory. This is why the user acceptance is quite good. Customizing the interface is straight forward and can be done at user level. The open source cummunity around Mattermost is really nice and welcoming. Apps for every operating systems are available and easy to use once manually set up. Scalability was never a problem with 1000+ users.

Inconvénients :

Setting up integrations is more complex than with Slack, where integrations can be installed with one click in the backend. There is an app directory, but the apps need to be set up manually. Once set up, they just work. Incoming webhooks are the only exception; they work out of the box. Mobile perfomance is gradually getting better, but it's not yet up to Slack's par. The Windows-app is not yet ready for big scale rollouts via group policies.

Mattermost: Self-Hosted Superior Alternative To Slack

Commentaires : Mattermost allows us to quickly keep connected to our colleagues across the world. It allows people to form groups and chat easily to many different teams, all within the same desktop app, web app, or mobile app.

Avantages :

This software is very easy to install and supports a simple Docker install, which makes it easy to keep up to date and secure. There are multiple examples on installing and running Mattermost in different cloud hosting environments, and the user community is also very helpful. Running the software locally means you can keep a much better eye on its security and usage. Its user management and directory integration is superior to Slack's. The desktop and mobile clients are fast and easy to install/configure/maintain.

Inconvénients :

There's not much that I dislike about Mattermost. Its open source nature may put some people off, but paid support and enterprise licensing solve that issue immediately.

Almost really good.

Commentaires : Slack with AD integration at half the cost. But I still wish I could afford Slack.

Avantages :

Slack integrations just work on Mattermost. The theme choices are very nice. The ability to host my own on-premises server is very nice. Technical support staff is very knowledgeable and competent. I'm not made to feel like an idiot if there is some specialized knowledge that I don't have.

Inconvénients :

The Android client is extremely buggy and fairly slow still. Selecting a push notice to open Mattermost to view and respond in the thread does not always open the right thread and is always slow (even on LAN, with the latest gen of Android phone!)). The client MUST be snappy and it just.. isn't. The Windows client becomes slower and slower the longer you have it open, so it must be restarted every day or two. It's a little buggy; sometimes new messages make your view scroll up instead of down. But it works well enough most of the time.

Good collaborative tool

Commentaires : It is good collaborative tool as alternative to slack.

Avantages :

I like how easy is to use and allows different "rooms" for collaboration for teams. It is a great tool for fast daily communication.

Inconvénients :

Not much that I didn't like but I have been using for so long different products so habbit of using and switching to it was a tricky part. Maybe lack of 3ed party connection to tools.

Best alternative to SLACK

Commentaires : I really liked the platform. My team found it easy to learn how to use it. Now we are replacing email communications with Mattermost.

Avantages :

It's free, it's open source, it has very easy to follow documentation. It's safe and secure. It works smooth.

Inconvénients :

It could have sub-channels and addittional options to configure. Could give native option for audio sending.