Checkout.com vs Klarna

Checkout.com (A collection of libraries and plugins for Checkout.com) and Klarna both appear on the Smoower Developer Ecosystem Index.

Checkout.com (rank #152) holds a narrow lead over Klarna (rank #257) on the overall Smoower ecosystem score (52 vs 47). The gap of 5 points reflects composite signals across code, docs, community and reach.

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

Checkout.com carries 542 GitHub stars across 55 public repos, with 26 repositories active in the last 90 days and 11 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 5.5x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Checkout.com is the stronger read for anyone weighting momentum. Klarna looks better where education 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.