Hybrid · LLM / chat

LanguageTool

Grammar/style checking with self-host option — lighter privacy model than many SaaS editors.

Best for: Editing polish without full LLM rewrite

Pricing: Free + Premium; self-host free

Official site All tools

Strengths

Writing & technical docs · supporting — Grammar pass without full rewrite.
Personal knowledge & notes · supporting — Polish published notes without full rewrite.
Email & newsletter ops · supporting — Final grammar pass.
Translation & localization · supporting — Target-language grammar pass.
Lab notes → blog post · supporting — Final polish pass.
Resume / portfolio for makers · supporting — Grammar pass.
Sales outreach (makers & shops) · supporting — Tone/grammar check.
Firmware release notes & changelog · supporting — Polish before publish.