Free & Open-Source Grammarly AI Alternatives

AI writing enhancement and rewriting.

1. LanguageTool ↗ ★ PICKFOSSPRIVATESELF-HOST
   Multi-language grammar + style checker.
   ●○○Easy · Strong feature parity
2. Ollama + plugins ↗ FOSSPRIVATE
   Ollama extended with community plugins.
   ●●○Medium · Covers most basics
3. Harper ↗ FOSSPRIVATE
   Fast offline English grammar checker.
   ●●○Medium · Covers most basics