Open source alternatives · Productivity
Open Source Alternative to Grammarly
Grammarly's premium plan is US$12 a month and reads everything you type. LanguageTool checks grammar free, privately.
What the paid app costs: US$12/mo
Why switch?
A grammar checker sees your emails, essays, and job applications. LanguageTool's open-source engine runs locally or on your own server, supports 30+ languages, and its browser extension works everywhere Grammarly does.
Compare the alternatives
| Alternative | License | Platforms | Best for |
|---|---|---|---|
| LanguageTool | LGPL-2.1 / MPL | Web, browser extension, desktop | The open-source Grammarly |
LanguageTool
Free forever LGPL-2.1 / MPL · Web, browser extension, desktop
- Grammar and style checking
- 30+ languages supported
- Self-hostable, privacy friendly
The open-source Grammarly
Which one should you pick?
- LanguageTool: The open-source Grammarly
Frequently asked questions
Is LanguageTool as good as Grammarly?
For grammar and spelling, very close, and better in many non-English languages. Grammarly's tone suggestions remain ahead.
Does it work in my browser?
Yes, extensions for Chrome, Firefox, Edge, and Safari.
Can I use it offline?
Yes, the desktop app and self-hosted server work fully offline.