Layerswap

Hop is a scalable rollup-to-rollup general token bridge. It allows users to send tokens from one rollup or sidechain to another almost immediately without having to wait for the networks challenge period.

Stargate is a composable cross-chain liquidity transport protocol enabling seamless asset transfers between blockchains.

Across is a cross-chain bridge for L2s and rollups secured by UMA's optimistic oracle. It is optimized for capital efficiency with a single liquidity pool, a competitive relayer landscape, and a no-slippage fee model.