Proton Mail vs TaxJar

Proton Mail and TaxJar (Making sales tax filing easier for more than 20,000 online sellers and merchants across the world.) both appear on the Smoower Developer Ecosystem Index.

Proton Mail (rank #401) holds a modest lead over TaxJar (rank #693) on the overall Smoower ecosystem score (41 vs 31). The gap of 10 points reflects composite signals across code, docs, community and reach.

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

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. TaxJar shows 490 stars across 39 public repos, 1 active in the last 90 days and 3 external contributors. The star gap on its own does not decide the comparison, but Proton Mail's footprint is roughly 33.2x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Proton Mail is the stronger read for anyone weighting reach. TaxJar 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.