Ahrefs vs Calendly

Ahrefs (BTW we use OCaml) and Calendly (Simple, beautiful scheduling.) both appear on the Smoower Developer Ecosystem Index.

Ahrefs (rank #400) holds a modest lead over Calendly (rank #729) on the overall Smoower ecosystem score (41 vs 30). The gap of 11 points reflects composite signals across code, docs, community and reach.

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

Ahrefs carries 1,305 GitHub stars across 173 public repos, with 28 repositories active in the last 90 days and 6 external contributors on record. Calendly shows 132 stars across 29 public repos, 0 active in the last 90 days and 0 external contributors. The star gap on its own does not decide the comparison, but Ahrefs's footprint is roughly 9.9x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Ahrefs is the stronger read for anyone weighting momentum. Calendly looks better where reach 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.