Fastmail vs Google Workspace

Fastmail (Open-source software developed at Fastmail.) and Google Workspace (Developer samples for Google Workspace APIs) both appear on the Smoower Developer Ecosystem Index.

Google Workspace (rank #165) holds a modest lead over Fastmail (rank #430) on the overall Smoower ecosystem score (51 vs 40). The gap of 11 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Google Workspace is clearly ahead of Fastmail. On education (docs, guides and learning material for developers), Fastmail is ahead of Google Workspace. On community (issue response, PR reviews and discussion health), Google Workspace is ahead of Fastmail. On reach (how visible the ecosystem is beyond its own repos), Fastmail is clearly ahead of Google Workspace. On momentum (release cadence and how fast the ecosystem moves), Google Workspace is 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. Google Workspace shows 48,567 stars across 57 public repos, 18 active in the last 90 days and 37 external contributors. The star gap on its own does not decide the comparison, but Google Workspace's footprint is roughly 7.7x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Fastmail is the stronger read for anyone weighting reach. Google Workspace 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.