Attio vs Calendly

Attio and Calendly (Simple, beautiful scheduling.) both appear on the Smoower Developer Ecosystem Index.

Attio (rank #512) holds a narrow lead over Calendly (rank #729) on the overall Smoower ecosystem score (37 vs 30). The gap of 7 points reflects composite signals across code, docs, community and reach.

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

Attio carries 91 GitHub stars across 20 public repos, with 14 repositories active in the last 90 days and 1 external contributors on record. Calendly shows 132 stars across 29 public repos, 0 active in the last 90 days and 0 external contributors.

Attio 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.