The Desk vs Slack, Mattermost & Rocket.Chat
If you’re looking for a self-hosted Slack alternative, you’ve probably found that the options split into two camps: proprietary SaaS you can’t run yourself, and large open-source platforms that can be a lot to operate. The Desk aims at a third spot — a small, calm, MIT-licensed chat app you run from one compose file.
This page is an honest look at where it fits. It also tells you plainly where it doesn’t yet, so you don’t deploy it and hit a wall.
At a glance
Section titled “At a glance”| The Desk | Slack | Mattermost | Rocket.Chat | |
|---|---|---|---|---|
| Self-hostable | ✅ Yes | ❌ SaaS only | ✅ Yes | ✅ Yes |
| License | MIT (open source) | Proprietary | Source-available / open core | MIT (open core) |
| Price | Free — no per-seat | Free tier, then per-seat | Free tier + paid editions | Free tier + paid editions |
| Setup | One docker compose up -d |
Sign up | Docker / binary / Helm | Docker / Snap / Helm |
| Data ownership | Your server, always | Slack’s cloud | Your server | Your server |
| Footprint | Deliberately small | — | Larger, enterprise-oriented | Larger, very feature-rich |
Slack is the product most teams are leaving; Mattermost and Rocket.Chat are the established self-hosted alternatives. The Desk is the newcomer optimizing for less — fewer moving parts, less to learn, less to run.
What The Desk is good at
Section titled “What The Desk is good at”- Getting out of your way. Channels, threads, and DMs plus the workflow features teams actually miss: scheduled messages, message reminders, polls, reactions, custom emoji, user-uploaded avatars, and instant full-text search.
- Being trivial to run. A prebuilt image and a single compose file. No Kubernetes, no build step, no exotic dependencies — a small 2 vCPU / 2 GB VPS comfortably hosts a team.
- Being yours. MIT-licensed, auditable, self-hosted. Your messages never leave your server, every user can export their data, and there’s no per-seat meter.
- Directory-managed logins. OIDC single sign-on with just-in-time provisioning, LDAP / Active Directory bind authentication with directory sync, SCIM 2.0 provisioning for Okta / Entra ID / OneLogin, and an SSO-only mode that turns password logins off entirely.
- Integrations you can build on. Bots and a versioned REST API, plus incoming and outgoing webhooks, let external systems post into a workspace and react to its events.
- Real admin basics. Roles, invitations, optional two-factor authentication, a moderation audit log, workspace analytics, and device/session management are built in.
When The Desk is not the right fit (yet)
Section titled “When The Desk is not the right fit (yet)”Being honest saves you a wasted afternoon. As of v1.14.0, The Desk does not have:
- Voice or video calls — not planned for the near term.
- Native mobile apps — the web app is fully responsive, but there’s no dedicated iOS/Android app or push notifications yet.
- A prebuilt-integrations marketplace — bots, a REST API, and webhooks are built in, but there’s no directory of hundreds of ready-made apps. If your workflow depends on one, a bigger platform will serve you better.
If none of those are dealbreakers and you want the lightest self-hosted chat that still feels finished, The Desk is built for you.
Ready to try it?
Section titled “Ready to try it?”Deploy The Desk in about five minutes — or skim the requirements first.