Why this score
Usable, but the measured score sits in the middle band. Budget for someone technical. Captured 2026-10-15. Unmeasured signals add nothing and are not treated as failures.
Alive14/20
- Last push. 8 points. GitHub pushed_at was 0 days before 2026-10-15.
- Releases in 12 months. 6 points. The public releases feed shows at least 10 tagged releases in the last 12 months.
- How fast issues close. Not measured. Median issue-close time is not in the seed snapshot, so this signal is omitted.
Trusted6.8/20
- OpenSSF Scorecard. 4.8 points. OpenSSF Scorecard 6.9 out of 10.
- Open critical or high vulnerabilities. Not measured. Open vulnerability counts were not fetched. We do not assume zero.
- Contributors in 90 days. Not measured. 90-day contributor counts were not fetched.
- Bus factor. Not measured. Contributor share was not fetched.
- Stars. 2 points. 26,050 stars, log-scaled and capped at 20,000.
Takeoverable13.8/25
- Licence. 10 points. Licence class permissive.
- Stack. 3.8 points. Python. TypeScript, JavaScript, Python, Go, PHP, and Vue score as widely hireable.
- Tests and CI. Not measured. We did not confirm a test suite. Missing CI at the usual paths is treated as unknown, not as a failure.
- Docs quality. Not measured. Docs quality is an LLM rubric. v1 does not invent that score.
- Data export. Not measured. Data-export was not audited app by app, so it is omitted.
Easy to run5/20
- One-click deploy. Not measured. No one-click host was verified for this app, so the signal is omitted rather than scored as a failure.
- Managed cloud or done-for-you. 5 points. SeatLess offers done-for-you setup. A vendor cloud, where listed, is the vendor’s own hosting, not a licence you own.
- Docker Compose. Not measured. No Dockerfile or Compose file at the usual paths. It may still exist elsewhere, so this is omitted.
- Memory needs. Not measured. Memory needs were not measured.
- Setup steps. Not measured. Setup-step rubric was not run.
Feature fit15/15
- Coverage of the incumbent’s main jobs. 15 points. Editorial reading of public docs. Not a certified feature audit. Unknown jobs are left out of the average.
What it replaces
Zulip is team chat where each conversation has a topic, which keeps a busy channel readable. It is Apache-2.0. People who hate Slack threads often prefer it. People who want Slack’s exact shape often do not.
Feature coverage vs Slack
Editorial, from public descriptions. A dash means we did not assess that job. This is not a lab test, and Salesforce has not reviewed it.
Licence, in plain language
Apache-2.0 Permissive
You can use it, change it, and keep your copy, including inside a product you sell, as long as you keep the copyright notice.
Apache-2.0.
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