I don't sync my extensions, as I use different ones for different profiles, but on nearly every profile, this is without a doubt one of the very first extensions I install on a fresh installation. It's also THE best developer add-on available for Firefox, and I strongly recommend anyone who uses GitHub regularly to install it. Feature-rich, stable, updated all the time...what's not to love?

Very useful enhancements to the Github website that make life easier.

Just the right level of tiny quality of life improvements... Love it 😍