Choose Slack if you need
- SOC 2 or ISO 27001. We haven't found them on Zulip's website.
At a glance
- Both have a free plan.
- Slack's lowest paid plan is Pro at $8.75 per user per month, paid monthly, as of October 20, 2026.
- Zulip's lowest paid plan is Standard at $6.67 per user per month, billed annually, or $8 billed monthly, as of October 20, 2026.
- Both are available on macOS, Windows, Linux, iOS, Android and API.
- Only Zulip lists Web.
- Both work with Zoom.
- Both list GDPR, HIPAA and SSO.
- Only Slack lists SOC 2 and ISO 27001.
- Both have a public API.
- Zulip can be self-hosted. We haven't confirmed that for Slack.
From each tool's own website, checked on the dates below, and from published reviews.
Which to choose
From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.
Choose Zulip if you need
- Web. We haven't found it on Slack's website.
Slack
Nobody has reviewed Slack yet. Its rating shows once it has 3 reviews.
Review Slack
Zulip
Nobody has reviewed Zulip yet. Its rating shows once it has 3 reviews.
Review ZulipThe facts
- What it does
- SlackAll your people and AI agents working together
- ZulipOrganized chat for distributed teams
- Free plan
- SlackYes
- ZulipYes
- Pricing
- SlackPer user, monthly
- ZulipPer user, monthly
- Paid plans from
- SlackPro: $8.75 per user per month, paid monthly
What they share
From the platforms and integrations each website lists.
Platforms
Both
- macOS
- Windows
- Linux
- iOS
- Android
- API
Only SlackNothing else listed
Only Zulip
- Web
Integrations
Both
- Zoom
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between Slack and Zulip yet.
Used either of them?
Your review makes this comparison better for the next person. Review Slack or review Zulip.