opengrammar
The premium Open Source alternative to Grammarly
🎯 Best for:Users who require grammar checking but cannot upload sensitive documents to the cloud.
What is opengrammar?
A privacy-centric alternative to Grammarly and ProWritingAid. It processes text locally or on private servers to provide syntax and style corrections without data harvesting.
Tech Stack
TypeScriptOffice Suite & Docs
Why opengrammar?
- • Complete data privacy
- • Self-hosted API
- • No recurring fees
Limitations
- • Lower accuracy than GPT-4
- • Resource intensive
- • Limited browser support
3/7/2026
Last Update
0
Forks
0
Issues
Apache-2.0
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to opengrammar instantly boosts your runway.
Competitor Cost
-$1,440
/ year (est. based on Grammarly)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%