IOTA
IOTA enables the secure and free exchange of value and data between IoT devices using distributed ledger technology (DLT).
IOTA is an open-source distributed ledger designed to facilitate free micro-transactions in the Internet of Things (IoT) ecosystem. IOTA utilizes a cryptographic structure called Directed Acyclic Graph (DAG) for faster and more efficient transaction validation than typical blockchains used in cryptocurrencies.