Duolingo vs Sage

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

Duolingo (rank #338) holds a modest lead over Sage (rank #625) on the overall Smoower ecosystem score (43 vs 33). The gap of 10 points reflects composite signals across code, docs, community and reach.

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

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. Sage shows 2,180 stars across 122 public repos, 6 active in the last 90 days and 22 external contributors.

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