About
Bluesky
Bluesky is building a protocol that can make social networks work more like email, blogs, or phone numbers — the open systems that power the rest of our online lives. The protocol we built, the AT Protocol, is close to completion, and the Bluesky app is a microblogging client built on it to showcase the protocol’s features. The Bluesky app also introduces people to how a social web on the AT Protocol will work.
Nostr
Nostr stands for “Notes and Other Stuff Transmitted by Relays”. Like HTTP or TCP-IP, Nostr is a protocol; an open standard upon which anyone can build. Nostr itself is not an app or service that you sign up for.
Nostr is designed for simplicity and enables censorship-resistant and globally decentralized publishing on the web.
This site
I wanted to compare the content on these two platforms.