Developer ecosystem comparison
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Adyen vs Fillout

Developer ecosystem comparison across GitHub activity, SDKs, documentation, community, reach and momentum.

Adyen and Fillout both appear on the Smoower Developer Ecosystem Index.

Adyen (rank #165) holds a modest lead over Fillout (rank #510) on the overall Smoower ecosystem score (51 vs 37). The gap of 14 points reflects composite signals across code, docs, community and reach.

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

Adyen carries 2,684 GitHub stars across 65 public repos, with 49 repositories active in the last 90 days and 39 external contributors on record. Fillout shows 2 stars across 9 public repos, 3 active in the last 90 days and 3 external contributors. The star gap on its own does not decide the comparison, but Adyen's footprint is roughly 1342.0x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Adyen is the stronger read for anyone weighting code quality. Fillout 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.

Side-by-side metrics

MetricAdyenFillout
Ranking
Overall rank#165#510
Pillars
Overall5137
Code8034
Education4753
Community4627
Reach750
Momentum4715
Builder experience00
Signals
Stars2,6842
Forks1,9784
Public repos659
Active repos (90d)493
External contributors393
Avg polish8934
Avg AI-readiness4421

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