Great and thanks for the list of instances; hadn’t seen that … only found Bibliogram in the last couple of weeks, and it’s very useful, so it’s good to know other places … some have RSS possible and some don’t … the snopyta link and the endl link are fine for RSS.
There is a new one (in beta) that popped up on the scene, haven’t tried it yet but thought I would list it. There is no AUR package yet, so would need to build by hand. Has a nice interface.