Good question @imransoudagar
I am not aware of any other currently operating websites and blockchains like Steemit. It would be good to know if there's anything else out there. I haven't been able to find anything close to it, from the research I've done.
Akasha is an Etherium based social network, but I don't think it's fully functional yet (please someone correct me if I'm wrong).
I guess Akasha is not fully functional.
I checked Akasha, it is available as a desktop app. There are just a few users, let's see how it turns out to be.