Fastmail vs Zammad

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

Zammad (rank #152) holds a modest lead over Fastmail (rank #430) on the overall Smoower ecosystem score (52 vs 40). The gap of 12 points reflects composite signals across code, docs, community and reach.

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

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. Zammad shows 6,394 stars across 11 public repos, 9 active in the last 90 days and 27 external contributors.

Fastmail is the stronger read for anyone weighting reach. Zammad 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.