# Lark vs Mattermost

**Leader by Vioscale score:** Lark

| Attribute | Lark | Mattermost |
|---|---|---|
| **Vioscale score** | 77 (43% (low)) | 59.2 (66% (medium)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 371 |
| adoption.github_stars | - | 38,909 |
| deployment.options | `{"cloud":true}` | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` |
| description.long | A single platform where teams can communicate, hold meetings, collaborate on documents, manage projects, and leverage AI to automate workflows and generate content. | Mattermost is an open-source messaging and collaboration platform designed for organizations requiring data sovereignty, self-hosting control, and mission-critical availability. It integrates with external tools and workflows, supports high-availability deployments, and serves government, defense, and enterprise customers needing secure, compliant operations. |
| features.capabilities | `{"hosting":"cloud","free_tier":true,"messaging":true,"api_access":true,"video_meetings":true}` | `{"hosting":"both","sso_scim":true,"free_tier":true,"messaging":true,"api_access":true,"whiteboard":false,"screen_sharing":false,"video_meetings":false,"app_marketplace":true,"compliance_controls":true}` |
| integrations.count | - | 14 |
| integrations.list | - | `[{"name":"Slack"},{"name":"Git"},{"name":"Jenkins"},{"name":"GitLab"},{"name":"GitHub"},{"name":"Twitter"},{"name":"Bugzilla"},{"name":"RSS"},{"name":"Gerrit"},{"name":"Redmine"},{"name":"Mercurial"},{"name":"SVN"},{"name":"Threema"},{"name":"Pexip"}]` |
| language.primary | - | TypeScript |
| market.availability | - | `{"hqCountry":"US","primaryMarkets":["US","CA","GB","EU","JP"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"ios":true,"web":true}` | `{"ios":true,"web":true}` |
| pricing | `{"type":"subscription","plans":[{"free":true,"name":"Starter","summary":"Free","features":["Team collaboration","20 users max","100 GB storage","1-on-1 video meetings","18 months message history","Unlimited real-time translation","1,000 automations/month","2,000 rows/table","Limited trial of Base AI"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"For small teams with simple communication needs","contactSales":false,"includedLimits":{"users":"20","storage":"100 GB","message_history":"18 months","automations_per_month":"1,000"}},{"free":false,"name":"Basic","summary":"$6/user/month billed annually","features":["Team collaboration","500 users max","5 TB storage (expandable)","1-on-1 video meetings","Unlimited message history","Unlimited real-time translation","1,000 automations/month","2,000 rows/table","Expanded trial of Base AI"],"commitment":"annual","components":[{"kind":"per_unit","unit":"user","amount":6,"period":"month","currency":"USD"}],"description":"For growing companies with basic collaboration needs","contactSales":false,"includedLimits":{"users":"500","storage":"5 TB","message_history":"Unlimited","automations_per_month":"1,000"}},{"free":false,"name":"Pro","summary":"$12/user/month billed annually","features":["Team collaboration","500 users max","15 TB storage (expandable)","500-participant video meetings","Unlimited message history","Unlimited real-time translation","50,000 automations/month","20,000 rows/table","Expanded trial of Base AI","Base advanced permissions","Security & organizational controls","Frontline solution compatible","Communication and collaboration permissions"],"commitment":"annual","components":[{"kind":"per_unit","unit":"user","amount":12,"period":"month","currency":"USD"}],"description":"For companies with comprehensive collaboration and management needs","contactSales":true,"includedLimits":{"users":"500","storage":"15 TB","message_history":"Unlimited","meeting_participants":"500","automations_per_month":"50,000"}},{"free":false,"name":"Enterprise","summary":"Custom pricing, billed annually","features":["Team collaboration","Unlimited users","15 TB + 30 GB per user storage (expandable)","500-participant video meetings","Unlimited message history","Unlimited real-time translation","500,000 automations/month","50,000 rows/table","Expanded trial of Base AI","Base advanced permissions","Security & organizational controls","Frontline solution compatible","Communication and collaboration permissions","Single sign-on (SSO)","Advanced security & compliance controls"],"commitment":"annual","description":"For large companies with advanced security and organizational management needs","contactSales":true,"includedLimits":{"users":"Unlimited","storage":"15 TB + 30 GB per user","message_history":"Unlimited","meeting_participants":"500","automations_per_month":"500,000"}}],"addOns":[{"name":"AI Meeting Notes","components":[{"per":{"qty":1800,"unit":"notes"},"kind":"metered","amount":1699,"currency":"USD"}]},{"name":"Meegle Premium","components":[{"kind":"per_unit","unit":"user","amount":12,"period":"month","currency":"USD"}]},{"name":"Base automation expansion","components":[{"per":{"qty":50000,"unit":"automation runs"},"kind":"metered","amount":599,"currency":"USD"}]}],"summary":"Free to $12/user/month. Free Starter tier. Annual billing saves 16.6%.","currency":"USD","freeTier":true,"sourceUrl":"https://www.larksuite.com","retrievedAt":"2026-08-03T20:21:24.479Z","startingPrice":{"amount":6,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` | `{"type":"hybrid","plans":[{"free":true,"name":"Open Source","description":"Self-hosted open-source version"},{"free":false,"name":"Enterprise E10","description":"Commercial enterprise version","contactSales":false},{"free":false,"name":"Enterprise E20","description":"Commercial enterprise version","contactSales":false}],"summary":"Free open-source tier available; commercial E10 and E20 enterprise editions","freeTier":true,"sourceUrl":"https://mattermost.com","retrievedAt":"2026-08-14T13:38:41.844Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | commercial |
| pricing.price_level | low | low |
| pricing.transparent | yes | no |
| release.cadence_days | - | 1 |
| release.history | - | `[{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.7.10","date":"2026-08-26T11:53:54Z","type":"stable","version":"v11.7.10"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.11.0-rc2","date":"2026-08-25T09:15:51Z","type":"prerelease","version":"v11.11.0-rc2"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.10.1","date":"2026-08-24T07:07:00Z","type":"stable","version":"v11.10.1"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.11.0-rc1","date":"2026-08-18T06:47:33Z","type":"prerelease","version":"v11.11.0-rc1"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.7.9","date":"2026-08-13T06:29:32Z","type":"stable","version":"v11.7.9"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.9.1","date":"2026-08-13T06:07:31Z","type":"stable","version":"v11.9.1"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.9.1-rc1","date":"2026-08-07T09:17:30Z","type":"prerelease","version":"v11.9.1-rc1"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.8.5","date":"2026-08-13T05:45:21Z","type":"stable","version":"v11.8.5"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.8.5-rc1","date":"2026-08-07T08:38:34Z","type":"prerelease","version":"v11.8.5-rc1"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.10.0","date":"2026-08-04T09:43:25Z","type":"stable","version":"v11.10.0"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.10.0-rc3","date":"2026-08-04T08:18:23Z","type":"prerelease","version":"v11.10.0-rc3"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v10.11.23","date":"2026-08-13T05:23:26Z","type":"stable","version":"v10.11.23"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v10.11.23-rc1","date":"2026-08-07T07:57:15Z","type":"prerelease","version":"v10.11.23-rc1"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.7.8","date":"2026-07-31T09:56:39Z","type":"stable","version":"v11.7.8"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.10.0-rc2","date":"2026-07-30T06:32:31Z","type":"prerelease","version":"v11.10.0-rc2"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.10.0-rc1","date":"2026-07-17T12:39:50Z","type":"prerelease","version":"v11.10.0-rc1"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.8.4","date":"2026-07-17T07:13:55Z","type":"stable","version":"v11.8.4"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.7.7","date":"2026-07-17T06:46:06Z","type":"stable","version":"v11.7.7"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v10.11.22","date":"2026-07-17T05:24:43Z","type":"stable","version":"v10.11.22"},{"url":"https://github.com/mattermost/mattermost/releases/tag/v11.9.0","date":"2026-07-08T06:02:46Z","type":"stable","version":"v11.9.0"}]` |
| reliability.status_page | yes | yes |
| security.disclosure_policy | - | yes |
| security.gdpr | yes | yes |
| security.scorecard | - | 7.3 |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=mattermost-redux&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Collaboration Software)

| Capability | Lark | Mattermost |
|---|:--:|:--:|
| **Modality** |  |  |
| Messaging | ✓ | ✓ |
| Video meetings | ✓ | ✗ |
| Whiteboard | - | ✗ |
| **Meetings** |  |  |
| Screen sharing | - | ✗ |
| Recording / transcription | - | - |
| **Security** |  |  |
| End-to-end encryption | - | - |
| SSO / SCIM | - | ✓ |
| **Access** |  |  |
| Guest / external access | - | - |
| **Compliance** |  |  |
| Compliance controls | - | ✓ |
| **Deployment** |  |  |
| Hosting | Cloud only | Cloud + self-hosted |
| **Scale** |  |  |
| Max participants | - | - |
| **Ecosystem** |  |  |
| App marketplace | - | ✓ |
| Public API / bot framework | ✓ | ✓ |
| **Commercial** |  |  |
| Free tier | ✓ | ✓ |

*Source: Vioscale. Generated 2026-09-01T17:06:39.703Z. "-" = undocumented, not absent.*