Duolingo vs Kustomer

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

Duolingo (rank #338) holds a modest lead over Kustomer (rank #602) on the overall Smoower ecosystem score (43 vs 34). The gap of 9 points reflects composite signals across code, docs, community and reach.

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

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. Kustomer shows 15 stars across 19 public repos, 6 active in the last 90 days and 4 external contributors. The star gap on its own does not decide the comparison, but Duolingo's footprint is roughly 114.7x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Duolingo is the stronger read for anyone weighting community. Kustomer 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.