Download as21
Download as21 (current and past versions) for Firefox
as21 is available to install from Firefox Browser Add-ons and for download from this page. It has 1 daily users. The latest version is 2.0, and it was last updated 6 years ago.
Total download count: 0 (Only count downloads from Firefox-Stats)
Available versions
You can find the current and older versions of as21 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 |
|---|---|---|---|---|
| 2.0 | XPI · ZIP · Source code | 368.82K | 0 | 2025-03-05 |
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
- Download and unpack the as21 ZIP file to a directory of your choice.
- In Chrome browser, go to
chrome://extensions - Enable Developer mode.
- Click on the Load Unpacked button.
- Select the directory of with the unpacked as21 ZIP file from step 1. as21 is now installed on your browser.
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