Discourse vs Grammarly

Discourse (The 100% open source discussion platform built for the next decade of the Internet.) and 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.) both appear on the Smoower Developer Ecosystem Index.

Discourse (rank #189) holds a modest lead over Grammarly (rank #602) on the overall Smoower ecosystem score (50 vs 34). The gap of 16 points reflects composite signals across code, docs, community and reach.

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

Discourse carries 55,678 GitHub stars across 620 public repos, with 90 repositories active in the last 90 days and 44 external contributors on record. Grammarly shows 4,355 stars across 23 public repos, 0 active in the last 90 days and 0 external contributors. The star gap on its own does not decide the comparison, but Discourse's footprint is roughly 12.8x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Discourse is the stronger read for anyone weighting momentum. Grammarly looks better where reach 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.