Harper
lastmod 2025-06-23created 2025-06-232 edits
Open-source alternative to Grammarly
About
- Open-source grammar checker. A product that can be used instead of Grammarly, the well-known commercial service
- Free for anyone to use, with its code and algorithms openly published
- Automatically detects and fixes grammar, style and spelling issues in English text
- Suits a wide range of users such as developers, writers and students, and allows free customization
- Can be self-hosted on a server or run locally, which is an advantage for privacy and data protection