NEM XEM: Catapult Testnet Dragon
There will be a launch of a testnet on Cow and an upgrade to Dragon including an experimental wallet, faucet, and tutorial.
Testnet Link: https://docs.nem.io/en/testnet
A testnet is an alternative cryptocurrency blockchain, to be used for testing. Testnet coins are separate and distinct from real coins, and are not supposed to have any value. This allows application developers to experiment without resorting to using real coins and not worrying about the integrity and security of the mainnet.