Mattermost Beta
Self-hosted secure team messaging.
Description
Mattermost offers secure workplace messaging behind your firewall. Chat privately, in groups, or with your team. Share files, connect systems via webhooks, and use Slack-compatible integrations. Requires Mattermost Server v9.11.0+. Host your server: https://about.mattermost.com/download. Terms: http://about.mattermost.com/terms/. Contribute: https://github.com/mattermost/mattermost-mobile. Note: Upstream source code isn't fully free.