Globs site

https://globs.org/

How to install an extension. It's a .zip file

A mozilla extension (an .xpi file) is in fact a zip formated file. If your browser (IE, I guess) downloaded it the wrong way as a .zip file, you just have to rename it as an .xpi file to be able to install it.

If you don't know how to install a mozilla extension, here is a small guide.