Klarna vs Klaviyo

Klarna and Klaviyo both appear on the Smoower Developer Ecosystem Index.

Klaviyo (rank #237) holds a narrow lead over Klarna (rank #257) on the overall Smoower ecosystem score (48 vs 47). The gap of 1 points reflects composite signals across code, docs, community and reach.

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

Klarna carries 2,965 GitHub stars across 139 public repos, with 8 repositories active in the last 90 days and 2 external contributors on record. Klaviyo shows 573 stars across 117 public repos, 23 active in the last 90 days and 17 external contributors. The star gap on its own does not decide the comparison, but Klarna's footprint is roughly 5.2x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Klarna is the stronger read for anyone weighting reach. Klaviyo looks better where community 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.