Grammarly charges $144/year. GrammarPeace does the same thing for $0. Open-source Chrome extension that checks grammar, rewrites tone, and translates 15+ languages, powered by AI models that are smarter than whatever Grammarly uses. Completely free with OpenRouter. Or bring your own key for Claude, GPT, Groq, Cerebras, even local Ollama. No servers. No accounts. No data collection. Your text goes straight from your browser to the AI. We don't even have a backend to spy on you if we wanted to.