Fastmail vs Persona

Fastmail (Open-source software developed at Fastmail.) and Persona (Configurable identity infrastructure for KYC, AML, KYB, fraud detection, onboarding, and more) both appear on the Smoower Developer Ecosystem Index.

Fastmail (rank #430) holds a modest lead over Persona (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), Persona is slightly ahead of Fastmail. On education (docs, guides and learning material for developers), Persona is ahead of Fastmail. On community (issue response, PR reviews and discussion health), Fastmail is slightly ahead of Persona. On reach (how visible the ecosystem is beyond its own repos), Fastmail is clearly ahead of Persona. On momentum (release cadence and how fast the ecosystem moves), Persona 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. Persona shows 101 stars across 90 public repos, 27 active in the last 90 days and 5 external contributors. The star gap on its own does not decide the comparison, but Fastmail's footprint is roughly 62.5x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Fastmail is the stronger read for anyone weighting reach. Persona looks better where education 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.