Grammarly vs Semrush

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 Semrush (We do love open source and have an opportunity to make it better from now.) both appear on the Smoower Developer Ecosystem Index.

Semrush (rank #317) holds a modest lead over Grammarly (rank #602) on the overall Smoower ecosystem score (44 vs 34). 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), Semrush is slightly ahead of Grammarly. On education (docs, guides and learning material for developers), Semrush is ahead of Grammarly. On community (issue response, PR reviews and discussion health), Semrush is ahead of Grammarly. On reach (how visible the ecosystem is beyond its own repos), Grammarly is slightly ahead of Semrush. On momentum (release cadence and how fast the ecosystem moves), Semrush is ahead of Grammarly.

Grammarly carries 4,355 GitHub stars across 23 public repos, with 0 repositories active in the last 90 days and 0 external contributors on record. Semrush shows 454 stars across 11 public repos, 2 active in the last 90 days and 7 external contributors. The star gap on its own does not decide the comparison, but Grammarly's footprint is roughly 9.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

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