PostHog vs Zeplin

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

PostHog (rank #30) holds a meaningful lead over Zeplin (rank #430) on the overall Smoower ecosystem score (63 vs 40). The gap of 23 points reflects composite signals across code, docs, community and reach.

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

PostHog carries 40,775 GitHub stars across 357 public repos, with 87 repositories active in the last 90 days and 212 external contributors on record. Zeplin shows 1,460 stars across 57 public repos, 8 active in the last 90 days and 4 external contributors. The star gap on its own does not decide the comparison, but PostHog's footprint is roughly 27.9x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

PostHog is the stronger read for anyone weighting momentum. Zeplin looks better where education is the deciding factor. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.