Farcaster —a decentralized social network protocol. 

Here’s why:

1. True Decentralization with On-Chain Identity**  
Farcaster combines the best of Web2 usability (like Twitter) with Web3 ownership. Users own their identities via **Ethereum-based usernames (Fnames)** and can move their social graph across clients. Unlike platforms like Lens Protocol (which relies on Polygon), Farcaster’s hybrid architecture (on-chain identity + off-chain data) ensures scalability without sacrificing decentralization.

2. Viral Adoption via "Frames" (Mini-Apps in Feeds)**  
Farcaster’s killer feature is **Frames**—interactive, embeddable apps inside posts (e.g., mint NFTs, play games, vote). This turns feeds into **discovery engines**, mimicking the early days of Facebook’s app platform but with open composability.