Developer ecosystem comparison
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Fastmail vs Loom

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

Fastmail (Open-source software developed at Fastmail.) and Loom (Async Video Messaging for Work) both appear on the Smoower Developer Ecosystem Index.

Fastmail (rank #430) holds a modest lead over Loom (rank #693) on the overall Smoower ecosystem score (40 vs 31). The gap of 9 points reflects composite signals across code, docs, community and reach.

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

Fastmail carries 6,316 GitHub stars across 38 public repos, with 12 repositories active in the last 90 days and 2 external contributors on record. Loom shows 50 stars across 32 public repos, 5 active in the last 90 days and 1 external contributors. The star gap on its own does not decide the comparison, but Fastmail's footprint is roughly 126.3x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Fastmail is the stronger read for anyone weighting reach. Loom looks better where code quality 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

MetricFastmailLoom
Ranking
Overall rank#430#693
Pillars
Overall4031
Code3537
Education6652
Community3311
Reach783
Momentum4430
Builder experience00
Signals
Stars6,31650
Forks57113
Public repos3832
Active repos (90d)125
External contributors21
Avg polish3532
Avg AI-readiness1434

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