Hermez

an open-source ZK Rollup that aims to be optimized for secure, low-cost and usable token transfers on the wings of Ethereum

Polygon Hermez – L2BEAT. l2beat.com/scaling/projects/hermez#:~:text=Hermez%20is%20an%20open%2Dsource,on%20the%20wings%20of%20Ethereum.