Duolingo vs Klarna

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

Klarna (rank #257) holds a narrow lead over Duolingo (rank #338) on the overall Smoower ecosystem score (47 vs 43). The gap of 4 points reflects composite signals across code, docs, community and reach.

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

Duolingo carries 1,721 GitHub stars across 12 public repos, with 8 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.

Duolingo 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.