15Five vs PostHog

15Five and PostHog (The single platform to analyze, test, observe, and deploy new features) both appear on the Smoower Developer Ecosystem Index.

PostHog (rank #31) holds a meaningful lead over 15Five (rank #693) on the overall Smoower ecosystem score (63 vs 31). The gap of 32 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 15Five. On education (docs, guides and learning material for developers), PostHog is ahead of 15Five. On community (issue response, PR reviews and discussion health), PostHog is ahead of 15Five. On reach (how visible the ecosystem is beyond its own repos), PostHog is clearly ahead of 15Five. On momentum (release cadence and how fast the ecosystem moves), PostHog is clearly ahead of 15Five.

15Five carries 141 GitHub stars across 29 public repos, with 2 repositories active in the last 90 days and 5 external contributors on record. PostHog shows 40,775 stars across 357 public repos, 87 active in the last 90 days and 212 external contributors. The star gap on its own does not decide the comparison, but PostHog's footprint is roughly 289.2x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

15Five is worth a look for teams already invested in its stack. PostHog looks better where momentum 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.