Fastmail vs Uptime.com

Fastmail (Open-source software developed at Fastmail.) and Uptime.com (Uptime.com is an industry-leading website monitoring solution.) both appear on the Smoower Developer Ecosystem Index.

Fastmail (rank #430) holds a narrow lead over Uptime.com (rank #625) on the overall Smoower ecosystem score (40 vs 33). The gap of 7 points reflects composite signals across code, docs, community and reach.

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

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. Uptime.com shows 35 stars across 9 public repos, 6 active in the last 90 days and 4 external contributors. The star gap on its own does not decide the comparison, but Fastmail's footprint is roughly 180.5x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Fastmail is the stronger read for anyone weighting reach. Uptime.com 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.