Orbiter Finance

From this blog (24-2-2023):

"Orbiter Finance is a decentralized cross-rollup Layer 2 bridge with a contract only on the destination side. It supports low-cost, instant transfer between ETH mainnet, zkSync, and Arbitrum, the cost is low, and the process is instant.

In Orbiter Finance, there are two roles they are Sender and Maker.

1. When the Sender initiates a transfer, the Maker provides liquidity for it.
2. The smart contract ensures the security of this process.
3. If the Maker does bad behaviors and the transfer fails, the Sender can initiate an arbitration request to the contract with Maker’s margin and then get the excess compensation."