Comparison
Slack vs Zulip
Slack and Zulip are both listed under Community platforms in this directory. On the criteria this directory records they differ on focus, public source repo, last commit, stars, llms.txt, pricing model. The table below compares them on identical criteria, drawn from what each product publishes.
By Fabian HugUpdated
Side by side
| Criterion | Slack | Zulip |
|---|---|---|
| Category | Tools | Tools |
| Type | Community platforms | Community platforms |
| Focus | community, chat | community, chat, open-source |
| Public source repo | Not stated | Yes |
| Last commit | Not stated | Aug 2026 |
| Stars | Not stated | 25k |
| Documentation | Yes | Yes |
| llms.txt | Yes | Not stated |
| Pricing model | Freemium (checked Jul 26, 2026) | Open core (checked Jul 26, 2026) |
| Link verified | Aug 1, 2026 | Aug 1, 2026 |
| Listed since | Jul 12, 2026 | Jul 12, 2026 |
What each one is
Team chat and AI work platform for managing projects, automating workflows, and connecting teams where developer and customer communities collaborate.
Slack is listed under Community platforms.
Questions
- What is the difference between Slack and Zulip?
- Slack is listed under Community platforms. Zulip is listed under Community platforms, tagged open-source. On the criteria this directory records they differ on focus, public source repo, last commit, stars, llms.txt, pricing model; everything else it tracks is the same for both.
- Do Slack and Zulip publish their source code?
- Zulip publishes a public source repository; Slack does not list one in this directory. A public repository means the code is readable, not that it carries an open-source license.
- Which of Slack and Zulip works with AI agents?
- Slack publishes a machine-readable surface: an MCP endpoint or an llms.txt file, verified by our weekly health checks. Zulip does not publish one that we have verified.
How to read this
Every fact on this page is copied from the product's own site or repository and dated. We do not test these tools hands-on, and the criteria are structural (what a product publishes) rather than qualitative (how well it works). Pricing is read off each product's own pricing page and carries the date it was read, so check the current page before budgeting. Where a product does not state something, the table says so instead of guessing.
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