Mattermost
Open Source (US Company, often self-hosted in EU)
Open-source platform for secure collaboration. Alternative to Slack, often self-hosted.
Visit WebsiteFeatures
- Channels
- Direct Messages
- Integrations
- Voice/Video Calls (Beta)
- Playbooks
Pricing
Free (Team Edition) / Paid (Enterprise)
Tags
Open SourceSelf-hostableFreemium/Paid
