Open-source proofreading and writing assistant that checks spelling, grammar, punctuation, and style across 30+ languages, with an HTTP API for integrations.
14.9k stars1.6k forksLGPL-2.1last commit Actively maintained
2 self-hosted Microsoft Editor alternatives
AI-powered writing assistant integrated into Microsoft 365 and available as a browser extension. It detects spelling, grammar, clarity and style issues, offers rewrite and tone suggestions, and applies context-aware corrections across Word, Outlook and web apps.
Alternatives to Microsoft Editor
#2
Web frontend that combines LibreTranslate translation and LanguageTool grammar checks, with optional Ollama LLM features for AI insights, file upload, and downloads.
118 stars7 forksGPL-3.0last commit Actively maintained
What replacing Microsoft Editor actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 2 of 2 shipped a commit in the last six months. Licences in this list: LGPL-2.1, GPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in AI Interfaces (Chatbots, Agents, RAG Apps).
