Decentralized applications, or Dapps, are applications built on a decentralized network such as Ethereum. These applications allow users to interact with Web3. Popular Dapps include OpenSea (NFT marketplace), Uniswap (decentralized exchange or DEX), Olympus DAO (decentralized finance or DeFi), and Skyweaver (blockchain gaming), among many others.
To learn more about connecting your wallet to dapps, please check out this video.