Rocket.Chat vs Lark
Rocket.Chat is open-source communication platform with team chat, video, and omnichannel customer engagement, while Lark is integrated workspace combining messaging, video, docs, and project management from ByteDance. Rocket.Chat is open source and can be self-hosted, giving you full control over your data. Rocket.Chat is built for teams that want self-hosted chat with customer-facing features, whereas Lark targets teams wanting an all-in-one collaboration suite.
| Feature | Rocket.Chat | Lark |
|---|---|---|
| Free tier available | ✓ | ✓ |
| Open source | ✓ | — |
| Bots | ✓ | — |
| Calendar | — | ✓ |
| Docs | — | ✓ |
| Federation | ✓ | — |
| Messenger | — | ✓ |
| OKRs | — | ✓ |
| Omnichannel | ✓ | — |
| Self-Hosted | ✓ | — |
| Video | — | ✓ |
| Video Calls | ✓ | — |
Pricing: Both Rocket.Chat and Lark are free. You can try both without spending a dollar.
Feature gaps: Rocket.Chat offers Bots, Federation and Omnichannel that Lark lacks. Lark brings Calendar, Docs and Messenger that Rocket.Chat does not have.
Team fit: Rocket.Chat is geared toward mid-size teams teams, while Lark is aimed at any size teams. Pick the one that matches where your team is today and where it is headed — migrating tools later is always painful.
Open source: Rocket.Chat is open source, meaning you can self-host, audit the code, and avoid vendor lock-in. Lark is proprietary — you are trusting the vendor with your data and uptime.
Where each tool shines: Rocket.Chat's biggest strengths are: self-hosted with full data ownership. combines internal chat and customer-facing messaging. Lark's biggest strengths are: includes messenger as a core feature, purpose-built for team communication workflows. includes video as a core feature, purpose-built for team communication workflows.
Watch out for: With Rocket.Chat, users commonly note that ui feels dated compared to slack. With Lark, the main complaint is that free plan exists but key features are locked behind the paid upgrade.
choose Rocket.Chat if
- Your profile matches its sweet spot: teams that want self-hosted chat with customer-facing features
- You need self-hosting, data sovereignty, or the ability to audit source code
- You specifically need Bots and Federation
- You care about combines internal chat and customer-facing messaging
- Your team size fits the mid-size teams profile Rocket.Chat is designed for
choose Lark if
- Your profile matches its sweet spot: teams wanting an all-in-one collaboration suite
- You specifically need Calendar and Docs
- You care about includes video as a core feature, purpose-built for team communication workflows
- Your team size fits the any size profile Lark is designed for
- The free tier works for you: free for up to 50 users
frequently asked
What is the difference between Rocket.Chat and Lark?
Rocket.Chat is open-source communication platform with team chat, video, and omnichannel customer engagement, while Lark is integrated workspace combining messaging, video, docs, and project management from ByteDance. Rocket.Chat is open source and can be self-hosted, giving you full control over your data. Rocket.Chat is built for teams that want self-hosted chat with customer-facing features, whereas Lark targets teams wanting an all-in-one collaboration suite.
Should I use Rocket.Chat or Lark?
Rocket.Chat gives you open source and self-hosting; Lark is a managed service. Which trade-off works for you?
When should I choose Rocket.Chat over Lark?
Choose Rocket.Chat if Your profile matches its sweet spot: teams that want self-hosted chat with customer-facing features; You need self-hosting, data sovereignty, or the ability to audit source code; You specifically need Bots and Federation; You care about combines internal chat and customer-facing messaging; Your team size fits the mid-size teams profile Rocket.Chat is designed for.
When should I choose Lark over Rocket.Chat?
Choose Lark if Your profile matches its sweet spot: teams wanting an all-in-one collaboration suite; You specifically need Calendar and Docs; You care about includes video as a core feature, purpose-built for team communication workflows; Your team size fits the any size profile Lark is designed for; The free tier works for you: free for up to 50 users.
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