Fastmail vs Gainsight

Fastmail (Open-source software developed at Fastmail.) and Gainsight both appear on the Smoower Developer Ecosystem Index.

Fastmail (rank #430) holds a narrow lead over Gainsight (rank #536) on the overall Smoower ecosystem score (40 vs 36). The gap of 4 points reflects composite signals across code, docs, community and reach.

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

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. Gainsight shows 5 stars across 6 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 Fastmail's footprint is roughly 1263.2x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Fastmail is the stronger read for anyone weighting reach. Gainsight looks better where community 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.