SKALE Network is live on Mainnet and operating non-stop since September 2020! Mainnet SKALE Chains are now open for developers on a rolling basis.
SKALE Manager contracts on Ethereum Mainnet: https://github.com/skalenetwork/skale-network/tree/master/releases/mainnet/skale-manager
IMA Bridge contracts on Ethereum Mainnet: https://github.com/skalenetwork/skale-network/tree/master/releases/mainnet/IMA
SKALE Network operates a Testnet for onboarding and training new validators, and performing testing of new features and bug fixes. SKALE Chains on testnet are reserved for only QA testing purposes.
SKALE Network core team operates several Dappnets for helping dApp developers perform final network and load testing before Mainnet production launch.