Chargebee vs Duolingo

Chargebee (Billing Platform for Subscription Businesses.) and Duolingo both appear on the Smoower Developer Ecosystem Index.

Duolingo (rank #338) holds a narrow lead over Chargebee (rank #401) on the overall Smoower ecosystem score (43 vs 41). The gap of 2 points reflects composite signals across code, docs, community and reach.

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

Chargebee carries 651 GitHub stars across 45 public repos, with 20 repositories active in the last 90 days and 1 external contributors on record. Duolingo shows 1,721 stars across 12 public repos, 8 active in the last 90 days and 11 external contributors.

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