A desktop wallet is a type of cryptocurrency wallet that is installed on a personal computer or laptop. It allows users to store, send, and receive digital currencies like Bitcoin and Ethereum securely. Desktop wallets provide a higher level of security compared to online wallets since the private keys are stored locally on the device. These wallets often come with user-friendly interfaces and various features, such as transaction history and address book management. However, users must ensure their computers are protected from malware and viruses, as any compromise can lead to the loss of funds stored in the wallet.