Grammarly vs TaxJar

Grammarly (Millions of users rely on Grammarly's AI-powered products to make their messages, documents, and social media posts clear, mistake-free, and impactful.) 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.

Grammarly (rank #600) holds a narrow lead over TaxJar (rank #696) on the overall Smoower ecosystem score (34 vs 31). The gap of 3 points reflects composite signals across code, docs, community and reach.

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

Grammarly carries 4,356 GitHub stars across 23 public repos, with 0 repositories active in the last 90 days and 0 external contributors on record. TaxJar shows 491 stars across 39 public repos, 1 active in the last 90 days and 2 external contributors. The star gap on its own does not decide the comparison, but Grammarly's footprint is roughly 8.9x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Grammarly is the stronger read for anyone weighting reach. TaxJar 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.