Developer ecosystem comparison
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Blackbird vs Fillout

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

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

Fillout (rank #510) holds a narrow lead over Blackbird (rank #728) on the overall Smoower ecosystem score (37 vs 30). The gap of 7 points reflects composite signals across code, docs, community and reach.

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

Blackbird carries 16 GitHub stars across 165 public repos, with 77 repositories active in the last 90 days and 6 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 Blackbird's footprint is roughly 8.0x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Blackbird is the stronger read for anyone weighting momentum. 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

MetricBlackbirdFillout
Ranking
Overall rank#728#510
Pillars
Overall3037
Code2834
Education6353
Community3127
Reach3050
Momentum5315
Builder experience00
Signals
Stars162
Forks224
Public repos1659
Active repos (90d)773
External contributors63
Avg polish3134
Avg AI-readiness2121

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