Latest Version:
2.0 Updated:
7 years ago Removed
Ready to install?
Flatline is available for download. Be careful when installing it.
Available versions
You can find the current and older versions of Flatline here. You can download the archived versions or inspect their source codes.
As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
| Version | Download | Size | Download count | Timestamp |
|---|---|---|---|---|
| 2.0 | XPI · ZIP · Source code | 43.22KB | 0 | 2019-05-13 |
2.0 43.22KB
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 the Flatline ZIP file.
- In Firefox browser, go to
about:addonsto open Add-ons Manager - Click on ⚙, Install Add-on From File

- Select the Flatline ZIP file from step 1. Flatline is now installed on your browser.
Best Flatline Alternatives
Here are some Firefox add-ons that are similar to Flatline:
Flat Lines
Firefox user 13674772
Death Flatline
stoleninsides
EKG Flatline
howellw
Flat Space
✖‿✖ Marshmello ✖‿✖
Desolate
sabrielraine
flat
Firefox user 13104956
Borderline
Firefox user 12091878
Empty Expanse
Lesdexia
Deadpan
limzcc
Sleepless Nights
Thomas
lifeless
VVA_VCR
Letdown
hubris-1364599486.9