Latest Version:
2.0 Updated:
7 years ago Removed
Ready to install?
CustomOne is available for download. Be careful when installing it.
Available versions
You can find the current and older versions of CustomOne 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 | 684.31KB | 0 | 2019-07-17 |
2.0 684.31KB
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 CustomOne ZIP file.
- In Firefox browser, go to
about:addonsto open Add-ons Manager - Click on ⚙, Install Add-on From File

- Select the CustomOne ZIP file from step 1. CustomOne is now installed on your browser.
Best CustomOne Alternatives
Here are some Firefox add-ons that are similar to CustomOne:
Custom 1
Olimar Putin
Simpleone
stgeorge
Custom Persona for me
Deplorable
My Very Own
Firefox user 14329002
CUSTOM Made
ILYAiDAN
miroku zenco personal
mirokuzenco
my own for myself
Sonu kumar
Designer
Nalgatronix
Ex0001
Firefox user 14871690
Just one Theme
damn
The Best One
davidhannoun
TORO_1
compuneek-1364596021.53