Grammarly

User sentiment is sharply divided. Non-native English speakers call Grammarly 'absolutely essential' for catching errors they cannot self-identify, and one dyslexic user relied on it for years. However, multiple highly-upvoted HackerNews comments raise critical issues: (1) PRIVACY — one user discovered Grammarly's TOS grants a 'nonexclusive, worldwide, royalty-free, transferable, sublicensable, perpetual, irrevocable license to copy, store and use your User Content,' and another describes the browser extension as functionally a 'cloud-connected keylogger' since all typed text is sent to Grammarly's servers. (2) AI HOMOGENIZATION — users complain that Grammarly's increasing LLM focus rewrites sentences in 'more verbose ways,' 'removes personality,' and makes 'human-written text read like AI text.' (3) ALTERNATIVES — multiple users are actively migrating to Harper (open-source, local-first, rule-based checker) or express desire for an open-source LLM-based grammar tool, though some concede 'Grammarly does a better job' than current alternatives. (4) SECURITY — comparisons to LastPass extension vulnerabilities and concerns about extension sandboxing. Overall, technical users are distrustful and actively seeking exits, while ESL/utility users remain dependent despite awareness of flaws.

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