Substrate

Substrate generally refers to a blockchain development framework, offering basic networking and consensus code for developers to assemble a blockchain.

Substrate has historically been a popular developer tool due to its native compatibility with the Polkadot ecosystem's software stack and the Ethereum virtual machine (EVM).

Although initially designed by teams closely affiliated with Polkadot, Substrate is general-purpose and can be used by any developer or development team deploying a new blockchain.