Duolingo vs Pendo

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

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

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. Pendo shows 267 stars across 134 public repos, 18 active in the last 90 days and 6 external contributors. The star gap on its own does not decide the comparison, but Duolingo's footprint is roughly 6.4x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Duolingo is the stronger read for anyone weighting reach. Pendo looks better where education 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.