Mattermost vs PrivOS
Mattermost and PrivOS are both team communication tools. Mattermost is aimed at enterprise and developers, while PrivOS is aimed at small businesses and enterprise. Both have a free plan.
Self-hosted secure collaboration
Self-hostable team chat, lists, docs and sandboxed AI agents
| Pricing | Open source | Freemium · $20 |
| Starting price | Not published | $20/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Built for | Enterprise, Developers | Small businesses, Enterprise, Developers |
| Platforms | web, macos, windows, linux, ios, android | web, linux |
| Country | US · 2015 | — |
| Rating | — | — |
Choose Mattermost if
Organizations needing self-hosted secure chat.
- Full control and security
- Open source
- DevOps-focused
Look elsewhere if: Teams wanting Slack's ecosystem.
Choose PrivOS if
Small and mid-sized teams that want chat, lists, files and AI agents on infrastructure they control.
- Free self-hosted Community edition for up to 10 users
- Agents do not count toward the free user limit
- Bring your own or locally hosted LLMs
Look elsewhere if: Teams that want a proven, widely adopted chat or project tool with large ecosystems (Mattermost, ClickUp).
Mattermost vs PrivOS pricing
Mattermost
- Free$0Self-hosted, community support
- ProfessionalCustomAnnual seat licenses; SSO, access controls
- EnterpriseCustomCompliance, HA, 24x7 support
- Enterprise AdvancedCustomAir-gapped, Zero Trust, classified controls
PrivOS
- Community$0Self-hosted, free up to 10 users, bring your own LLM keys
- Starter$20/user/mo5,000 LLM credits/user, shared cloud; 10% off annually
- Professional$30/user/mo10,000 credits/user, workflow engine, audit log
- Enterprise$45/user/mo20,000 credits/user, min 50 users, DLP, SIEM, SCIM
- Custom EnterpriseCustomOn-prem or air-gap, $4/user licence plus services
Mattermost · Key features
- Self-hosted team chat
- Playbooks for incidents
- Boards
- DevOps integrations
- Compliance and security
- Air-gapped deployment
Cons
- UX behind Slack
- Self-hosting effort
- Smaller app ecosystem
PrivOS · Key features
- Rooms with channels, threads, direct messages and calls
- Smart Lists with Kanban and table views, 16 field types, XLSX import
- Versioned file storage on S3-compatible object storage
- Room-scoped AI agents in sandboxed containers with approval gates
- Bots reacting to 18 workspace event types, plus webhooks
- Connect no-code builder for multi-step AI workflows
Cons
- Community install supports Linux x86_64 only, no arm64
- Each extra custom agent is billed like a user seat
- Shown prices are a discounted rate below list price
Mattermost vs PrivOS: FAQ
Do Mattermost and PrivOS have a free plan?
Yes, both Mattermost and PrivOS have a free plan; paid plans add more usage and features.
Which is better for small businesses, Mattermost or PrivOS?
PrivOS lists small businesses as a core audience, while Mattermost is aimed more at enterprise and developers.