Fastmail vs Zoho

Fastmail (Open-source software developed at Fastmail.) and Zoho (Unique and powerful suite of software to run your entire business, brought to you by a company with the long term vision to transform the way you work.) both appear on the Smoower Developer Ecosystem Index.

Fastmail (rank #430) holds a narrow lead over Zoho (rank #662) on the overall Smoower ecosystem score (40 vs 32). The gap of 8 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Zoho is slightly ahead of Fastmail. On education (docs, guides and learning material for developers), Fastmail is clearly ahead of Zoho. On community (issue response, PR reviews and discussion health), Fastmail is slightly ahead of Zoho. On reach (how visible the ecosystem is beyond its own repos), Fastmail is clearly ahead of Zoho. On momentum (release cadence and how fast the ecosystem moves), Zoho 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. Zoho shows 756 stars across 244 public repos, 55 active in the last 90 days and 1 external contributors. The star gap on its own does not decide the comparison, but Fastmail's footprint is roughly 8.4x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

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