RAILGUN is an on-chain Zero-Knowledge (ZK) Privacy ecosystem for DeFi, Ethereum, Arbitrum, NFTs, Polygon, and dApps. It enables privacy for any on-chain dApp through smart contracts. RAILGUN is fully decentralized, with no centralized company. It offers on-chain simplicity, a feature-complete experience, no compromises, and multichain privacy. Developers can manage on-chain finances with account-level privacy, while DeFi users can manage finances with increased privacy. RAILGUN is integrated with various partners for private smart contract integrations.