Grammarly: AI Writing and Grammar Checker App
Improve your writing with Grammarly's AI assistance. Get spell check, grammar check, generative AI, and more in one tool. Real-time suggestions for improving tone and clarity help ensure your writing makes the impression you want.
Grammarly: AI Writing and Grammar Checker App is available to install from Firefox Browser Add-ons and for download from this page. It has 757,687 daily users The latest version is 8.929.0, and it was published 4 days ago.
Install from Firefox Browser Add-onsTotal download count: 6 (Only count downloads from Firefox-Stats)
All available versions
You can find the current and older versions of Grammarly: AI Writing and Grammar Checker App here. You can download the archived versions or inspect their source codes.
As a free user, you can only download the latest version.
Upgrade to download older versions
| Version | Download | Size | Download count | Timestamp |
|---|---|---|---|---|
| 8.929.0 | XPI · ZIP · Source code | 39.82M | 0 | 2025-03-07 |
| 8.927.0 | Paid users only | 39.67M | 0 | 2024-12-18 |
| 8.926.0 | Paid users only | 39.66M | 0 | 2024-11-28 |
| 8.912.0 | Paid users only | 39.55M | 3 | 2024-11-17 |
| 8.911.0 | Paid users only | 39.58M | 0 | 2024-03-13 |
| 8.910.0 | Paid users only | 39.70M | 0 | 2024-02-06 |
| 8.909.0 | Paid users only | 39.61M | 0 | 2023-11-17 |
| 8.908.0 | Paid users only | 39.52M | 0 | 2023-10-23 |
| 8.907.0 | Paid users only | 39.61M | 0 | 2023-09-07 |
| 8.906.0 | Paid users only | 39.51M | 0 | 2023-05-05 |
| 8.905.0 | Paid users only | 38.97M | 0 | 2023-03-20 |
| 8.904.0 | Paid users only | 38.97M | 3 | 2022-09-15 |
| 8.903.0 | Paid users only | 38.95M | 0 | 2022-09-09 |
| 8.902.0 | Paid users only | 38.95M | 0 | 2022-08-25 |
| 8.901.0 | Paid users only | 38.92M | 0 | 2022-07-20 |
| 8.852.2307 | Paid users only | 6.25M | 0 | 2019-06-14 |
Install XPI file
An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
- Simply drag-and-drop the XPI into Firefox to install the add-on.
Install ZIP file
- In Firefox browser, go to
about:addonsto open Add-ons Manager - Click on , then select Install Add-on From File
- Select the Grammarly: AI Writing and Grammar Checker App ZIP file from step 1. Grammarly: AI Writing and Grammar Checker App is now installed on your browser.