Mattermost vs Zulip

At a glance

Zulip has a free plan. We haven't confirmed one for Mattermost.
Mattermost offers a free trial (length not stated). We haven't confirmed one for Zulip.
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 Web, Windows, macOS, Linux, iOS, Android and API.
Both work with GitHub, GitLab, Jira, Zoom and PagerDuty.
Both list SSO.
Only Zulip lists GDPR and HIPAA.
Both have a public API.
Both can be self-hosted.

From each tool's own website, checked on the dates below, and from published reviews.

From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.

No checked fact sets Mattermost apart from Zulip yet.

Integration with Jitsi Meet, Sentry or Zapier. We haven't found them on Mattermost's website.
GDPR or HIPAA. We haven't found them on Mattermost's website.

No reviews yet

Nobody has reviewed Mattermost yet. Its rating shows once it has 3 reviews.

No reviews yet

Nobody has reviewed Zulip yet. Its rating shows once it has 3 reviews.

What it does: MattermostZero-trust collaboration, automation and AI in private cloud, self-hosted, and air-gapped environments; ZulipOrganized chat for distributed teams
Free plan: MattermostNot confirmed; ZulipYes
Pricing: MattermostNot confirmed; ZulipPer user, monthly
Paid plans from: Mattermost

From the platforms and integrations each website lists.

Both

Only MattermostNothing else listed

Only ZulipNothing else listed

Both

Reviewers who say they used one of these before the other.

No reviewer has said they moved between Mattermost and Zulip yet.

Your review makes this comparison better for the next person. Review Mattermost or review Zulip.