Grammarly vs Heap

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 Heap (Product Insights) both appear on the Smoower Developer Ecosystem Index.

Heap (rank #567) holds a narrow lead over Grammarly (rank #600) on the overall Smoower ecosystem score (35 vs 34). The gap of 1 points reflects composite signals across code, docs, community and reach.

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

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. Heap shows 215 stars across 65 public repos, 6 active in the last 90 days and 0 external contributors. The star gap on its own does not decide the comparison, but Grammarly's footprint is roughly 20.3x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Grammarly is the stronger read for anyone weighting community. Heap 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.