I've been trying NetBSD 11.1 on an RPi1 these last few days.

It takes a long time to install anything and I don't expect to surf the web on it, but it's nice to have this OS as an option.

I wanted to try out openconnect-saml on it, but the install failed because of lack of RAM/swap. I have managed to run xfreerdp over openconnect on it though (FreeBSD had better performance).