Some requirements:
FOLDERS - I need folders and the ability to view all feeds within a folder at once.
FOSS - I don't want to give corporate ghouls my money and my privacy. I'll pay a foss creator if its a one-time fee or offers a reasonable annual subscription.
MULTI-PLATFORM - iOS, Android, Web. I have multiple devices and only want one app for them all. If something is Web-only, that will do.
Thank you.
theoldreader.com
Seconded. I’ve been using Feedly, which is usually fine until I remember it has a premium component. Been meaning to switch back to The Old Reader and I don’t remember why I left.