Relay is an open-source chat widget (like Intercom) that allows sites to quickly get an XMTP wallet messaging chatbox installed on their site. Relay aims to decentralize communication between Web3 personas (+account abstraction on XMTP) and the DAOs and companies they want to interact with. ChatGPT embedding will help users talk to dApps and transact with smart contracts in a conversational way.
3NUM provides secure wallet-to-wallet and wallet-to-phone number messaging.
Axelar delivers secure cross-chain communication.
Boomerang is an innovative communication dApp enabling users to connect wallet to wallet.
Buidler is a Web3 Messaging App for your community, teams, and supporters.
A Web3 messaging app for online communities that lets users own their identity and privacy.
Ethereum Org repository of the specifications for peer-to-peer communication.