# Waku - Idea Board - Polling/Voting: Enable polling or voting off-chain, vote results could be aggregated and submitted on chain in one transaction. - Marketplace (buy/sell goods or NFTs, ride-share, etc): Send offer and negotiate off-chain. Highest bids sent over Waku could be binding and submitted to the contract by seller. - Collaborative editing: Use Waku for live collaborative editing of documents, saved version of documents can then be stored on decentralized storage. - Multiplayer games: Waku can be used to communicate game move off-chain, final state (e.g. winner) can then be submitted on chain for reward (e.g. NFT mint or winner takes stake). - IoT systems: Enable devices to communicate or report small data payload in a decentralized manner. - Decentralized wallet address ownership verification: Use Waku to enable communication between dApp and wallet such as signature or zeroknowledge proof exchange to prove identity. - Reputation systems: - Censorship resistant reviews plugin: - Privacy preserving location tracker: - Medical systems for remote diagnosis : - Decentralized smart grid system : - Decentralized autonomous vehicle coordination : - Crowd-sourced weather data network : - P2P Chess : - P2P TicTacToe : - Privacy focused fitness tracker : - Decentralized and privacy-focused hiring platform (Web3 version of BambooHR) : - DAO/Governance Tooling : - Satellite communication systems : - Decentralized web Walkie-Talkie : - Crypto ATMs : - Smart access cards : - Chat app: Proper chat protocol is complex, we recommend to instead wait for our upcoming Chat SDK.