Duolingo vs Kajabi

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

Duolingo (rank #338) holds a modest lead over Kajabi (rank #662) on the overall Smoower ecosystem score (43 vs 32). 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), Kajabi is slightly ahead of Duolingo. On education (docs, guides and learning material for developers), Kajabi is slightly ahead of Duolingo. On community (issue response, PR reviews and discussion health), Duolingo is ahead of Kajabi. On reach (how visible the ecosystem is beyond its own repos), Duolingo is clearly ahead of Kajabi. On momentum (release cadence and how fast the ecosystem moves), Kajabi 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. Kajabi shows 99 stars across 103 public repos, 8 active in the last 90 days and 11 external contributors. The star gap on its own does not decide the comparison, but Duolingo's footprint is roughly 17.4x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Duolingo is the stronger read for anyone weighting reach. Kajabi looks better where momentum 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.