Duolingo vs kununu

Duolingo and kununu (Let's make work better.) both appear on the Smoower Developer Ecosystem Index.

Duolingo (rank #338) holds a modest lead over kununu (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), kununu is ahead of Duolingo. On education (docs, guides and learning material for developers), Duolingo is slightly ahead of kununu. On community (issue response, PR reviews and discussion health), Duolingo is clearly ahead of kununu. On reach (how visible the ecosystem is beyond its own repos), Duolingo is slightly ahead of kununu.

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. kununu shows 132 stars across 40 public repos, 17 active in the last 90 days and 2 external contributors. The star gap on its own does not decide the comparison, but Duolingo's footprint is roughly 13.0x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Duolingo is the stronger read for anyone weighting community. kununu looks better where code quality 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.