Culture Amp vs Grammarly

Culture Amp (The employee feedback platform) 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.

Grammarly (rank #600) holds a narrow lead over Culture Amp (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), Culture Amp is ahead of Grammarly. On education (docs, guides and learning material for developers), Grammarly is slightly ahead of Culture Amp. On community (issue response, PR reviews and discussion health), Grammarly is slightly ahead of Culture Amp. On reach (how visible the ecosystem is beyond its own repos), Grammarly is ahead of Culture Amp. On momentum (release cadence and how fast the ecosystem moves), Culture Amp is slightly ahead of Grammarly.

Culture Amp carries 1,202 GitHub stars across 179 public repos, with 15 repositories active in the last 90 days and 16 external contributors on record. Grammarly shows 4,356 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 Grammarly's footprint is roughly 3.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Culture Amp is the stronger read for anyone weighting code quality. 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.