agentmash vs Mattermost
agentmash and Mattermost are both team communication tools. agentmash is aimed at developers and small businesses, while Mattermost is aimed at enterprise and developers. Both have a free plan.
Shared room that warns coding agents before they edit the same file
Self-hosted secure collaboration
| Pricing | Freemium · $20 | Open source |
| Starting price | $20/mo | Not published |
| Free plan | Yes | Yes |
| Free trial | 30 days | — |
| Built for | Developers, Small businesses, Enterprise | Enterprise, Developers |
| Platforms | macos, windows, linux | web, macos, windows, linux, ios, android |
| Country | — | US · 2015 |
| Rating | — | — |
Choose agentmash if
Engineering teams where several developers run AI coding agents on the same repository at once.
- Pricing counts developers only, with unlimited agents
- Free for two developers, and Team's first month is free
- Server does not see code unless a room enables diffs
Look elsewhere if: Solo developers or teams that just need a single coding agent (Cursor) without cross-machine coordination.
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.
agentmash vs Mattermost pricing
agentmash
- Free$0Up to 2 developers, 1 private repo, 7 days of history
- Team$20/moPer developer, unlimited private repos, 90 days; $16 billed yearly
- EnterpriseFrom $15,000/yrSelf-hosting from a private Docker image, invoiced
Mattermost
- Free$0Self-hosted, community support
- ProfessionalCustomAnnual seat licenses; SSO, access controls
- EnterpriseCustomCompliance, HA, 24x7 support
- Enterprise AdvancedCustomAir-gapped, Zero Trust, classified controls
agentmash · Key features
- Pre-edit warnings naming the teammate, branch and task behind a change
- Advisory path claims so agents split work before starting
- Strict mode that blocks edits into a teammate's change until acknowledged
- Prompts sent to a teammate's agent that run only after their approval
- Team chat whose latest messages reach every agent before its next prompt
- Lobby desktop app for Mac and Windows running agents side by side
Cons
- Sign-in requires GitHub; GitLab and Bitbucket need extra setup
- No Linux desktop app, only the CLI
- Continue and Zed get MCP tools only, without live edits in the room
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
agentmash vs Mattermost: FAQ
Do agentmash and Mattermost have a free plan?
Yes, both agentmash and Mattermost have a free plan; paid plans add more usage and features.
Which is better for small businesses, agentmash or Mattermost?
agentmash lists small businesses as a core audience, while Mattermost is aimed more at enterprise and developers.