Slack
9.0#4 in team chat appsFrom $8.75 a monthFree planAndroidiOSWebLinux
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| Fact | Slack | Zulip |
|---|---|---|
| Channels | Yes | Channels define the audience for conversations and can be public or private. |
| Free plan | Yes | Yes |
| Guest access | Yes | Yes |
| Integrations | Salesforce,Jira,Google Drive,ChatGPT,Asana,Miro,Notion,Zoom,GitHub,GitLab,PagerDuty,Box,Dropbox,Zendesk,Freshdesk,HubSpot | Zulip lists more than 130 native integrations and hundreds more through Zapier and IFTTT. |
| Message history | limited | limited |
| Paid from | 7.25 | 3.5 |
| Security controls | Security features include two-factor authentication, access logs, SSO, device management, and data loss prevention. | Self-hosted deployments can run behind firewalls or on air-gapped networks and offer configurable password, session, timeout, log-rotation and API-rate-limit policies. |
Slack suits teams that coordinate through channels and connected apps, or need guest and external messaging options. Free workspaces fit users who can work within the 90-day history and ten-app limits.
Zulip suits teams that want channel-based chat across desktop, mobile, and web platforms. Its cloud and self-hosted options provide different deployment choices.