Adyen vs Duolingo

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

Adyen (rank #165) holds a narrow lead over Duolingo (rank #338) on the overall Smoower ecosystem score (51 vs 43). The gap of 8 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Adyen is clearly ahead of Duolingo. On community (issue response, PR reviews and discussion health), Adyen is ahead of Duolingo. On reach (how visible the ecosystem is beyond its own repos), Duolingo is clearly ahead of Adyen. On momentum (release cadence and how fast the ecosystem moves), Adyen is ahead of Duolingo.

Adyen carries 2,684 GitHub stars across 65 public repos, with 49 repositories active in the last 90 days and 39 external contributors on record. Duolingo shows 1,721 stars across 12 public repos, 8 active in the last 90 days and 11 external contributors.

Adyen is the stronger read for anyone weighting code quality. Duolingo looks better where reach 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.