Check out the community-developed alternative to Slack. Send messages to coworkers in a shared environment, receive notifications, check and access attached files, links, images, etc. Synchronize data between different platforms for quick management.
Mattermost 5.2.2 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The Mattermost installer is commonly called Mattermost.exe.
We recommend checking the downloaded files with any free antivirus. The software lies within Communication Tools, more precisely Instant messaging. Mattermost is suitable for 32-bit and 64-bit versions of Windows 7/8/10/11. The following versions: 4.2 and 3.5 are the most frequently downloaded ones by the program users. This free program was originally created by Mattermost, Inc.
From the developer:
Mattermost is a modern, self-hosted workplace messaging solution. It brings all your team communication into one place, making it searchable and accessible anywhere. With this program, you can share messages and files across phones and PCs, with archiving and instant search - all while keeping vital communications behind your firewall.
You may want to check out more software, such as Phoner, IVM Answering Attendant or AV VoizGame, which might be similar to Mattermost.
Texting & Video calls
Entertainment