Coursera vs Duolingo

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

Duolingo (rank #339) holds a modest lead over Coursera (rank #726) on the overall Smoower ecosystem score (43 vs 30). The gap of 13 points reflects composite signals across code, docs, community and reach.

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

Coursera carries 1,367 GitHub stars across 81 public repos, with 1 repositories active in the last 90 days and 0 external contributors on record. Duolingo shows 1,724 stars across 12 public repos, 8 active in the last 90 days and 11 external contributors.

Coursera is worth a look for teams already invested in its stack. Duolingo looks better where community 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.