Not that you would want to look any where else of course, but...https://fedidb.com/serversfilter by software.
I just moved my instance over to PieFed on the weekend. If anyone is looking for a smaller PieFed instance away from the bigger players, we'd love to have you here at quokk.au.
To not support genocide denying, transphobic, authoritarian developers. Devs are more active and adding features users/mods need. We're still all on the same Fediverse able to communicate, we're just using more 'ethical' software.
Not that you would want to look any where else of course, but...
https://fedidb.com/servers
filter by software.