Sorry, just re-read where you were asking specifically about the Alby signer extention/wallet combo
LNbits is a really handy piece of software that has similar functionality to Albyhub with some setup
Discussion
I am looking for an alternative to connect to Amethyst with NWC and to use as a signer on my Desktop. It looks like there is nothing. I wonder if getalby also shut down the signer extension on the browser.
There are signer extensions like Nostore on iOS and safari and Nos2x is the OG Signer for chrome.
Http://Nsec.app is also a way to create a bunker:// for your private key