Rocket.Chat
Slack
| Feature | Rocket.Chat | Slack |
|---|---|---|
| Pricing | Free / from $4/mo | Free / from $7.25/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.1 / 5 | 4.4 / 5 |
| Best For | security-conscious-organizations, government, self-hosters, enterprises | teams, enterprise, remote-workers, developers |
| Founded | 2015 | 2013 |
| Channels | ✓ | ✓ |
| Direct Messaging | ✓ | ✗ |
| Video Calls | ✓ | ✗ |
| Federation | ✓ | ✗ |
| E2e Encryption | ✓ | ✗ |
| Marketplace | ✓ | ✗ |
| Huddles | ✗ | ✓ |
| Workflows | ✗ | ✓ |
| Integrations | ✗ | ✓ |
| File Sharing | ✗ | ✓ |
| Search | ✗ | ✓ |
✓ Rocket.Chat Pros
- Fully open-source and self-hostable
- End-to-end encryption
- Federation support between instances
- Highly customizable
✗ Rocket.Chat Cons
- Self-hosted requires maintenance
- Mobile apps less polished than Slack
- Smaller app ecosystem
✓ Slack Pros
- Excellent integrations
- Channels system
- Huddles
- Searchable history
✗ Slack Cons
- Message limit on free plan
- Notification overload
- Can be distracting
The Verdict
Rocket.Chat is built for security conscious organizations and government, with a focus on channels and direct-messaging. Slack targets teams and enterprise and leads with channels and huddles.
Pricing is close: Rocket.Chat starts at $4/mo versus $7.25/mo for Slack — not a deciding factor on its own.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Slack edges out on user ratings (4.4 vs 4.1). While both are well-regarded, that gap reflects real differences in user satisfaction worth considering.
Bottom line: Slack has a slight overall edge — but if fully open-source and self-hostable matters most to you, Rocket.Chat may still be the right call.
