Lark
Mattermost
| Feature | Lark | Mattermost |
|---|---|---|
| Pricing | Free / from $12/mo | Free / from $10/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.3 / 5 | 4.2 / 5 |
| Best For | startups, asian-market-teams, small-businesses, cross-functional-teams | devops-teams, security-conscious-orgs, government, enterprise |
| Founded | 2019 | 2015 |
| Messaging | ✓ | ✓ |
| Video Conferencing | ✓ | ✗ |
| Documents | ✓ | ✗ |
| Spreadsheets | ✓ | ✗ |
| Project Management | ✓ | ✗ |
| Approval Workflows | ✓ | ✗ |
| Channels | ✗ | ✓ |
| Playbooks | ✗ | ✓ |
| Integrations | ✗ | ✓ |
| Self Hosting | ✗ | ✓ |
| Compliance | ✗ | ✓ |
✓ Lark Pros
- All-in-one suite (chat, docs, video, tasks)
- Very generous free tier
- Fast and responsive
- Built-in approval workflows
✗ Lark Cons
- ByteDance ownership raises data concerns
- Less popular in Western markets
- Some features feel overwhelming
✓ Mattermost Pros
- Self-hostable
- Open source
- DevOps integrations
- Secure
✗ Mattermost Cons
- Smaller ecosystem
- Fewer integrations than Slack
- Self-hosting complexity
The Verdict
Lark is built for startups and asian market teams, with a focus on messaging and video-conferencing. Mattermost targets devops teams and security conscious orgs and leads with messaging and channels.
Pricing is close: Mattermost starts at $10/mo versus $12/mo for Lark — 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.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.