Duolingo vs Perk

Duolingo and Perk (We're fixing business travel.) both appear on the Smoower Developer Ecosystem Index.

Duolingo (rank #338) holds a narrow lead over Perk (rank #372) on the overall Smoower ecosystem score (43 vs 42). The gap of 1 points reflects composite signals across code, docs, community and reach.

On education (docs, guides and learning material for developers), Perk is slightly ahead of Duolingo. On community (issue response, PR reviews and discussion health), Perk is slightly ahead of Duolingo. On reach (how visible the ecosystem is beyond its own repos), Duolingo is ahead of Perk. On momentum (release cadence and how fast the ecosystem moves), Perk is 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. Perk shows 34 stars across 25 public repos, 5 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 50.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

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