Calendly vs Klarna

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

Klarna (rank #255) holds a modest lead over Calendly (rank #729) on the overall Smoower ecosystem score (47 vs 30). The gap of 17 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Klarna is clearly ahead of Calendly. On education (docs, guides and learning material for developers), Klarna is clearly ahead of Calendly. On community (issue response, PR reviews and discussion health), Klarna is clearly ahead of Calendly. On reach (how visible the ecosystem is beyond its own repos), Klarna is ahead of Calendly. On momentum (release cadence and how fast the ecosystem moves), Klarna is 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. Klarna shows 2,965 stars across 139 public repos, 8 active in the last 90 days and 2 external contributors. The star gap on its own does not decide the comparison, but Klarna's footprint is roughly 22.5x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Calendly is worth a look for teams already invested in its stack. Klarna looks better where code quality 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.