Calendly vs PostHog

Calendly (Simple, beautiful scheduling.) 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 Calendly (rank #729) on the overall Smoower ecosystem score (63 vs 30). The gap of 33 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 Calendly. On education (docs, guides and learning material for developers), PostHog is slightly ahead of Calendly. On community (issue response, PR reviews and discussion health), PostHog is clearly ahead of Calendly. On reach (how visible the ecosystem is beyond its own repos), Calendly is ahead of PostHog. On momentum (release cadence and how fast the ecosystem moves), PostHog is clearly ahead of Calendly.

Calendly carries 132 GitHub stars across 29 public repos, with 0 repositories active in the last 90 days and 0 external contributors on record. PostHog shows 40,877 stars across 357 public repos, 87 active in the last 90 days and 206 external contributors. The star gap on its own does not decide the comparison, but PostHog's footprint is roughly 309.7x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Calendly is the stronger read for anyone weighting reach. 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.