# Slack vs Zulip (https://devrel.directory/directory/compare/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.

## 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

### Slack (https://devrel.directory/directory/slack)

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.

### Zulip (https://devrel.directory/directory/zulip)

Open-source threaded team chat; the community home of Rust and other projects that outgrew unthreaded chat.

Zulip is listed under Community platforms, tagged open-source.

## 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.