Calendly vs Duo Security

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

Duo Security (rank #277) holds a modest lead over Calendly (rank #729) on the overall Smoower ecosystem score (46 vs 30). The gap of 16 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Duo Security is clearly ahead of Calendly. On education (docs, guides and learning material for developers), Duo Security is ahead of Calendly. On community (issue response, PR reviews and discussion health), Duo Security is clearly ahead of Calendly. On reach (how visible the ecosystem is beyond its own repos), Calendly is clearly ahead of Duo Security. On momentum (release cadence and how fast the ecosystem moves), Duo Security 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. Duo Security shows 1,477 stars across 52 public repos, 16 active in the last 90 days and 8 external contributors. The star gap on its own does not decide the comparison, but Duo Security's footprint is roughly 11.2x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Calendly is the stronger read for anyone weighting reach. Duo Security 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.