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#"grammarly"]

1 article

Harper vs Grammarly: The Free Offline Grammar Checker That Never Sees Your Data (2026)

Harper vs Grammarly: The Free Offline Grammar Checker That Never Sees Your Data (2026)

Harper is a free, open-source Rust grammar checker that runs entirely offline — no cloud, no data collection, under 10ms per check. Here's how it compares to Grammarly's $144/year plan.

13 min00