Decentralized applications, or “dApps” have become a game changer in the blockchain space over the past few years. As of the first quarter of 2022, there are about 2.4 million daily active users of dApps. To put it simply, a dApp is an application built on a decentralized network that combines a smart contract and a frontend user interface. DApps can be applied to almost any industry, such as finance, gaming, social media, medical, governance, and even file storage. The Ethereum network hosts thousands of these types of dApps with the number of applications growing every day. The School of Decentralized Applications provides a comprehensive understanding of dApps and covers the most popular applications in the field.