Atlas

Atlas is an application backend that is designed to simplify the development of off-chain code for on-chain Plutus smart contracts. Some of its key features include an intuitive API for building transactions, leveraging first-class Haskell to avoid code duplication, and modular data providers for querying ledger state information.

Developers can also use Atlas to write realistic unit tests that correspond to on-chain behaviour and execute integration tests against a Cardano node in a private network.