Shout out to https://bazqux.com, a modern Google Reader replacement and the only SaaS I pay for. I'm not affiliated, just really love it. It's been solid and awesome for me for over 7 years now.
Shout out to Feedbin! It was created shortly after (I think) Google announced the Reader deprecation. I signed up around the first day and have been a subscriber since then. It even has a well-documented and supported API. I hope Ben keeps running it for many years to come.
Same. It's definitely the SaaS that I'm happiest using.