There are various tools and libraries available to create and broadcast transactions to the NEO network:
- neon-js is a JavaScript library that can be used to build extensive transactions in any JavaScript application
- neo-python is a full NEO node that can be used as an SDK to create transactions and interact with the NEO network
- neo-gui is the official Windows GUI to interact with the NEO network
- neo-cli is the official full node implementation that runs as a command line implementation and can be used to create and broadcast transactions to the NEO network
- Many other wallet or node implementations like neo-lux and neo-thinsdk-cs in C#