fedimint supports a federation of custodians for ecash. also, i beleive fedimint is more modular. i.e. there's a built in module system. I am not aware of one for Cashu.
Discussion
Cashu is way simpler and more accessible due to python and single sig bitcoin wallet. It's designed to iterate quickly and build a lot of shit. Fedimint is multisig and rust. It's made to be a reliable, efficient, & secure implementation suitable for industrial deployments. Both implementations are still early, fedimint will take longer.
Perfect, thanks guys ❤️