# Lark vs Zulip

**Leader by vioscaleAI score:** Lark

| Attribute | Lark | Zulip |
|---|---|---|
| **vioscaleAI score** | 72.9 (60% (medium)) | 61.7 (75% (high)) |
| content.faq | `[{"answer":"A unified platform combining messaging, knowledge management, and automation with AI capabilities. Helps teams consolidate workflows, conversations, and integrations in one workspace where AI can access full context to automate tasks and drive results. It is indexed under Collaboration Software.","source":"https://www.larksuite.com","question":"What is Lark?","confidence":0.6},{"answer":"Lark offers a free tier, so you can start without paying. Paid plans start at $6 per user per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://www.larksuite.com","question":"Is Lark free?","confidence":0.6},{"answer":"We have confirmed browser-based access to Lark. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://www.larksuite.com","question":"What platforms does Lark support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Lark, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://www.larksuite.com","question":"Can Lark be self-hosted?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001 and GDPR for Lark. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Lark not holding them. Always confirm compliance directly before you rely on it.","source":"https://www.larksuite.com","question":"What security certifications does Lark have?","confidence":0.6}]` | `[{"answer":"An open-source team collaboration application that organizes conversations into topic-based threads, blending instant messaging with email-style threading to support both real-time and delayed communication patterns. It is indexed under Collaboration Software.","source":"https://zulip.com","question":"What is Zulip?","confidence":0.6},{"answer":"Zulip is open source, so it can be self-hosted and used at no licence cost. A commercial or hosted edition starts at $3.50 per user per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://zulip.com/plans/","question":"Is Zulip free to use?","confidence":0.6},{"answer":"We have confirmed browser-based access to Zulip. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://zulip.com","question":"What platforms does Zulip support?","confidence":0.6},{"answer":"Yes. Zulip can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://zulip.com","question":"Can Zulip be self-hosted?","confidence":0.6},{"answer":"We have confirmed 61 integrations for Zulip, including Slack, Microsoft Teams, Discord, Mattermost, Rocket.Chat, Matrix, IRC and Email, plus 53 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://zulip.com/plans/","question":"What does Zulip integrate with?","confidence":0.6},{"answer":"We have independently confirmed HIPAA and GDPR for Zulip. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Zulip not holding them. Always confirm compliance directly before you rely on it.","source":"https://zulip.com/security/","question":"What security certifications does Zulip have?","confidence":0.7}]` |
| deployment.options | `{"cloud":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | A unified platform combining messaging, knowledge management, and automation with AI capabilities. Helps teams consolidate workflows, conversations, and integrations in one workspace where AI can access full context to automate tasks and drive results. | An open-source team collaboration application that organizes conversations into topic-based threads, blending instant messaging with email-style threading to support both real-time and delayed communication patterns. |
| features.capabilities | `{"hosting":"cloud","free_tier":true,"messaging":true,"api_access":true,"video_meetings":true,"compliance_controls":true,"recording_transcription":"recording"}` | `{"hosting":"both","sso_scim":true,"free_tier":true,"messaging":true,"api_access":true,"pricing_model":"per_seat_subscription","e2e_encryption":true,"screen_sharing":false,"video_meetings":true,"app_marketplace":true,"deployment_model":"cloud_saas","hipaa_compliance":true,"compliance_controls":true,"guest_external_access":true,"ad_hoc_voice_video_huddles":true,"cross_company_guest_channels":true,"threaded_reply_conversations":true,"automated_workflow_bot_builders":true,"channel_based_topic_organization":true,"google_workspace_office_365_sync":true,"jira_github_engineering_webhook_sync":true,"salesforce_zendesk_sales_support_sync":true,"robust_message_search_and_history_indexing":true}` |
| integrations.count | - | 130 |
| integrations.list | - | `[{"name":"Slack"},{"name":"Microsoft Teams"},{"name":"Discord"},{"name":"Mattermost"},{"name":"Rocket.Chat"},{"name":"Matrix"},{"name":"IRC"},{"name":"Email"},{"name":"GitHub"},{"name":"GitLab"},{"name":"Bitbucket"},{"name":"Asana"},{"name":"Jira"},{"name":"Linear"},{"name":"Trello"},{"name":"Basecamp"},{"name":"Jenkins"},{"name":"CircleCI"},{"name":"GitHub Actions"},{"name":"Travis CI"},{"name":"TeamCity"},{"name":"Heroku"},{"name":"Netlify"},{"name":"Docker"},{"name":"Kubernetes"},{"name":"Ansible Tower"},{"name":"Puppet"},{"name":"Grafana"},{"name":"Prometheus"},{"name":"Nagios"},{"name":"New Relic"},{"name":"Sentry"},{"name":"PagerDuty"},{"name":"Opsgenie"},{"name":"Splunk"},{"name":"Freshdesk"},{"name":"Zendesk"},{"name":"Salesforce"},{"name":"Dropbox"},{"name":"Google Calendar"},{"name":"Nextcloud"},{"name":"Notion"},{"name":"Zapier"},{"name":"IFTTT"},{"name":"n8n"},{"name":"BigBlueButton"},{"name":"Jitsi Meet"},{"name":"Webex"},{"name":"Zoom"},{"name":"Tenor"},{"name":"Redmine","native":true,"category":"project_management","direction":"inbound"},{"name":"OpenProject","native":true,"category":"project_management","direction":"inbound"},{"name":"Zabbix","native":true,"category":"monitoring","direction":"inbound"},{"name":"Buildbot","native":true,"category":"ci_cd","direction":"inbound"},{"name":"GoCD","native":true,"category":"ci_cd","direction":"inbound"},{"name":"Stripe","native":true,"category":"payments","direction":"inbound"},{"name":"Okta","native":true,"category":"identity","direction":"inbound"},{"name":"OneLogin","native":true,"category":"identity","direction":"inbound"},{"name":"Microsoft Entra ID","native":true,"category":"identity","direction":"inbound"},{"name":"Discourse","native":true,"category":"community","direction":"inbound"},{"name":"Mastodon","native":true,"category":"social","direction":"inbound"},{"name":"Patreon","native":true,"category":"productivity","direction":"inbound"},{"name":"Airbrake","native":true,"category":"error_tracking","direction":"inbound"}]` |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":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":"Free","summary":"Free, limited to 10,000 message history","features":["Message history search (10,000 limit)","File storage up to 5 GB total","Complete team chat solution","Hundreds of integrations","Advanced roles and permissions","Guest accounts"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Cloud plan with limited history and storage","contactSales":false,"includedLimits":{"storage":"5 GB total","messages_history":"10,000"}},{"free":false,"name":"Standard","summary":"$6.67/user/month billed annually or $8/month","features":["Unlimited search history","File storage up to 5 GB per user","Flexible permissions with custom groups","Message retention policies","Brand Zulip with your logo","Priority commercial support","Public access option"],"commitment":"annual","components":[{"kind":"per_unit","unit":"seat","amount":6.67,"period":"year","currency":"USD"},{"kind":"per_unit","unit":"seat","amount":8,"period":"month","currency":"USD"}],"description":"Full-featured cloud plan","contactSales":false,"includedLimits":{"storage":"5 GB per user"}},{"free":false,"name":"Plus","summary":"$10/user/month billed annually or $12/month","features":["All Standard plan features","File storage up to 25 GB per user","SSO with SAML (Okta, OneLogIn)","SCIM user and group sync","Custom domain","Limit user list access for guests"],"minSeats":10,"commitment":"annual","components":[{"kind":"per_unit","unit":"seat","amount":10,"period":"year","currency":"USD"},{"kind":"per_unit","unit":"seat","amount":12,"period":"month","currency":"USD"}],"description":"Advanced cloud plan with enhanced features","contactSales":false,"includedLimits":{"storage":"25 GB per user"}},{"free":true,"name":"Self-hosted (Open Source)","summary":"Free, open-source self-hosted","features":["Complete team chat solution with all Zulip features without limitation","100% open-source software","Retain full control over your data"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Free open-source self-hosted option","contactSales":false,"includedLimits":{}},{"free":false,"name":"Self-hosted Basic","summary":"$3.50/user/month (with $20/month first-year discount)","features":["Unlimited support","Email and chat support","SSO with SAML and Microsoft Entra ID","AD/LDAP user sync","Full compliance","Data exports","Data retention policies"],"commitment":"monthly","components":[{"kind":"per_unit","unit":"seat","amount":3.5,"period":"month","currency":"USD"}],"description":"Commercial support plan for self-hosted deployments","contactSales":false,"includedLimits":{}},{"free":false,"name":"Self-hosted Enterprise","summary":"Contact sales for pricing","features":["Email, chat and phone support","SSO with OpenID Connect","AD/LDAP, SAML and OpenID Connect group sync","Implementation consulting","Custom feature development","Advanced deployment options"],"description":"Premium support plan for self-hosted deployments","contactSales":true,"includedLimits":{}}],"summary":"From $6.67/user/month (cloud annual), free open-source self-hosted option, or $3.50/user/month for commercial self-hosted support. Free tier available.","currency":"USD","freeTier":true,"sourceUrl":"https://zulip.com/plans/","retrievedAt":"2026-09-03T17:54:41.041Z","startingPrice":{"unit":"seat","amount":3.5,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | open_source |
| pricing.price_level | low | free |
| pricing.starting_price | - | `{"amount":3.5,"currency":"USD"}` |
| pricing.transparent | yes | yes |
| reliability.status_page | yes | yes |
| security.certifications | `[{"name":"SOC 2 Type II","level":"Type II","status":"active"}]` | - |
| security.disclosure_policy | - | yes |
| security.gdpr | yes | yes |
| security.hipaa | - | yes |
| security.iso27001 | yes | - |
| security.soc2 | yes | - |
| security.trust_center | - | https://zulip.com/security/ |

## Capabilities (Collaboration Software)

| Capability | Lark | Zulip |
|---|:--:|:--:|
| **Modality** |  |  |
| Messaging | ✓ | ✓ |
| Video meetings | ✓ | ✓ |
| Whiteboard | - | - |
| **Meetings** |  |  |
| Screen sharing | - | ✗ |
| Recording / transcription | Recording | - |
| **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: vioscaleAI. Generated 2026-09-21T06:24:25.368Z. "-" = undocumented, not absent.*