Fastmail vs Sysdig

Fastmail (Open-source software developed at Fastmail.) and Sysdig (Security for containers, Kubernetes, and cloud services) both appear on the Smoower Developer Ecosystem Index.

Fastmail (rank #430) holds a modest lead over Sysdig (rank #693) on the overall Smoower ecosystem score (40 vs 31). The gap of 9 points reflects composite signals across code, docs, community and reach.

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

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. Sysdig shows 284 stars across 6 public repos, 1 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 22.2x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Fastmail is the stronger read for anyone weighting reach. Sysdig makes more sense for teams already using its adjacent tools. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.