Rolod0x, a Web3 Address Book

rolod0x is a free, open-source cross-browser extension that provides a private, local-only onchain address book for labeling blockchain addresses. Once addresses are labeled, the extension shows those labels on any website where the addresses appear, such as Etherscan transaction pages. It works on any EVM-based blockchain and Solana, and it can be added directly from a web page by right-clicking an address. The project is licensed under the GNU General Public License v3 or later, and its donation options include Gitcoin Grants Round 20 and the Giveth platform.