Proton Mail vs Slab

Proton Mail and Slab (Making the workplace a source of learning and purpose through knowledge-sharing. We're hiring!) both appear on the Smoower Developer Ecosystem Index.

Proton Mail (rank #401) holds a narrow lead over Slab (rank #455) on the overall Smoower ecosystem score (41 vs 39). The gap of 2 points reflects composite signals across code, docs, community and reach.

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

Proton Mail carries 16,265 GitHub stars across 186 public repos, with 19 repositories active in the last 90 days and 20 external contributors on record. Slab shows 49,433 stars across 28 public repos, 0 active in the last 90 days and 8 external contributors. The star gap on its own does not decide the comparison, but Slab's footprint is roughly 3.0x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Proton Mail is the stronger read for anyone weighting momentum. Slab looks better where education 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.