Decentralised applications (DApps) are open-source digital applications that are not controlled by a single authority. DApps are built and run on blockchain networks, such as Ethereum. The key difference between normal apps and DApps is that they are run on a decentralised peer-to-peer networks, such as a blockchain, rather than a centralised computer system. DApps include things like decentralised exchanges, NFT marketplaces and play-to-earn games.
DApps are built to have no downtime and remove the risk of censorship, fraud and third-party interference. Some popular DApps on Ethereum include:
Uniswap (decentralised exchange)
Axie Infinity (play to earn game)
OpenSea (NFT marketplace)