Calendly vs Semrush

Calendly (Simple, beautiful scheduling.) and Semrush (We do love open source and have an opportunity to make it better from now.) both appear on the Smoower Developer Ecosystem Index.

Semrush (rank #317) holds a modest lead over Calendly (rank #729) on the overall Smoower ecosystem score (44 vs 30). The gap of 14 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Semrush is ahead of Calendly. On education (docs, guides and learning material for developers), Semrush is ahead of Calendly. On community (issue response, PR reviews and discussion health), Semrush is clearly ahead of Calendly. On reach (how visible the ecosystem is beyond its own repos), Calendly is ahead of Semrush. On momentum (release cadence and how fast the ecosystem moves), Semrush 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. Semrush shows 454 stars across 11 public repos, 2 active in the last 90 days and 7 external contributors. The star gap on its own does not decide the comparison, but Semrush's footprint is roughly 3.4x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Calendly is the stronger read for anyone weighting reach. Semrush 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.