Duolingo vs Mollie

Duolingo and Mollie (Building a payments and banking stack for makers.) both appear on the Smoower Developer Ecosystem Index.

Mollie (rank #122) holds a modest lead over Duolingo (rank #338) on the overall Smoower ecosystem score (54 vs 43). The gap of 11 points reflects composite signals across code, docs, community and reach.

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

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. Mollie shows 2,571 stars across 85 public repos, 30 active in the last 90 days and 26 external contributors.

Duolingo is the stronger read for anyone weighting reach. Mollie 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.