Fastmail vs Salesforce

Fastmail (Open-source software developed at Fastmail.) and Salesforce (Noteworthy Open Source projects made available by Salesforce. Available under Open Source or Creative Commons licensing. No warranty or support implied) both appear on the Smoower Developer Ecosystem Index.

Salesforce (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), Salesforce is clearly ahead of Fastmail. On education (docs, guides and learning material for developers), Salesforce is slightly ahead of Fastmail. On community (issue response, PR reviews and discussion health), Salesforce is clearly ahead of Fastmail. On reach (how visible the ecosystem is beyond its own repos), Fastmail is clearly ahead of Salesforce. On momentum (release cadence and how fast the ecosystem moves), Salesforce 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. Salesforce shows 68,892 stars across 417 public repos, 75 active in the last 90 days and 6 external contributors. The star gap on its own does not decide the comparison, but Salesforce's footprint is roughly 10.9x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

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