Fastmail vs Intercom

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

Intercom (rank #82) holds a modest lead over Fastmail (rank #430) on the overall Smoower ecosystem score (57 vs 40). The gap of 17 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Intercom is clearly ahead of Fastmail. On education (docs, guides and learning material for developers), Fastmail is ahead of Intercom. On community (issue response, PR reviews and discussion health), Intercom is slightly ahead of Fastmail. On reach (how visible the ecosystem is beyond its own repos), Fastmail is clearly ahead of Intercom. On momentum (release cadence and how fast the ecosystem moves), Intercom is clearly 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. Intercom shows 3,761 stars across 190 public repos, 56 active in the last 90 days and 16 external contributors.

Fastmail is the stronger read for anyone weighting reach. Intercom looks better where momentum 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.