Personally my favorite spiritual successor to stumbleupon has been cloudhiker.net. I found kagis to be too personal blog focused for my tastes. I love that kagi is doing so much of this out in the open though.

There are a surprising amount out there: https://blog.woblick.dev/en/2025/best-stumbleupon-alternativ...

There are still a lot of alternatives:

http://cloudhiker.net

https://www.offscopes.com

Newsletter version if you prefer: https://randomdailyurls.com

First thing I thought... honestly we should bring it back anyway

I miss StumbleUpon so much!