Fastmail vs Pendo

Fastmail (Open-source software developed at Fastmail.) and Pendo both appear on the Smoower Developer Ecosystem Index.

Fastmail (rank #430) holds a narrow lead over Pendo (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), Fastmail is slightly ahead of Pendo. On education (docs, guides and learning material for developers), Fastmail is slightly ahead of Pendo. On community (issue response, PR reviews and discussion health), Pendo is ahead of Fastmail. On reach (how visible the ecosystem is beyond its own repos), Fastmail is clearly ahead of Pendo. On momentum (release cadence and how fast the ecosystem moves), Fastmail is ahead of Pendo.

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. Pendo shows 267 stars across 134 public repos, 18 active in the last 90 days and 6 external contributors. The star gap on its own does not decide the comparison, but Fastmail's footprint is roughly 23.7x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Fastmail is the stronger read for anyone weighting reach. Pendo looks better where community 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.