The "Funder" is a full-stack decentralized application (dApp) that includes a smart contract and a frontend interface. The dApp allows multiple funders to transfer and withdraw funds. It utilizes a mapping to track the number of funders and their addresses within the smart contract. Through the frontend interface, funders can interact with the contract by transferring funds using the transfer function and withdrawing a specified amount of Ether using the withdraw function, with a limit of 2 Ether per withdrawal. This dApp provides a user-friendly way for funders to contribute and manage their funds securely on the blockchain.