PostHog vs Zulip

PostHog (The single platform to analyze, test, observe, and deploy new features) and Zulip (Organized team chat) both appear on the Smoower Developer Ecosystem Index.

PostHog (rank #31) holds a meaningful lead over Zulip (rank #536) on the overall Smoower ecosystem score (63 vs 36). The gap of 27 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), PostHog is ahead of Zulip. On education (docs, guides and learning material for developers), PostHog is ahead of Zulip. On community (issue response, PR reviews and discussion health), PostHog is slightly ahead of Zulip. On reach (how visible the ecosystem is beyond its own repos), PostHog is slightly ahead of Zulip. On momentum (release cadence and how fast the ecosystem moves), PostHog is clearly ahead of Zulip.

PostHog carries 40,819 GitHub stars across 357 public repos, with 87 repositories active in the last 90 days and 210 external contributors on record. Zulip shows 32,299 stars across 67 public repos, 9 active in the last 90 days and 76 external contributors.

PostHog is the stronger read for anyone weighting momentum. Zulip makes more sense for teams already using its adjacent tools. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.