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Ganache CLI, part of the Truffle suite of Ethereum development tools, is the command line version of Ganache, your personal blockchain for Ethereum development.

Formerly testrpc, Ganache CLI uses ethereumjs to simulate full client behavior and make developing Ethereum applications faster, easier, and safer. It also includes all popular RPC functions and features (like events) and can be run deterministically to make development a breeze.

ganache-cli utilizes ganache-core internally, which is distributed with optional native dependencies for increased performance. If these native dependencies fail to install on your system ganache-cli will automatically fallback to ganache-core’s pre-bundled JavaScript build.