Fastmail vs mParticle by Rokt

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

mParticle by Rokt (rank #338) holds a narrow lead over Fastmail (rank #430) on the overall Smoower ecosystem score (43 vs 40). The gap of 3 points reflects composite signals across code, docs, community and reach.

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

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. mParticle by Rokt shows 317 stars across 85 public repos, 14 active in the last 90 days and 21 external contributors. The star gap on its own does not decide the comparison, but Fastmail's footprint is roughly 19.9x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Fastmail is the stronger read for anyone weighting reach. mParticle by Rokt 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.