From CryptoWiki

  • Testnet of Ethereum. Launched in 2019, Goerli is one of several Ethereum testnets that lets developers safely test their code before deploying them on the Ethereum mainnet. Will be deprecated, its last fork Dencun is coming in the following months (30-11-2023).
  • Became tradable after LayerZero enabled trading between mainnet and Goerli (2-2023). Ethereum developers, such as Tim Beiko, are proposing a new testnet called Holli, which aims to make it easier for developers to acquire testnet ETH and reduce the need for a secondary market. The plan is to slowly phase out Goerli while moving users to the Sepolia testnet—which is already running but as a permissioned chain and not yet open for anyone to run a validator node.