IOTA is an open-source distributed ledger protocol that goes 'beyond blockchain' through its core invention of the blockless ‘Tangle’. The IOTA Tangle is a quantum-proof Directed Acyclic Graph, with no fees on transactions & no fixed limit on how many transactions can be confirmed per second in...
ZCash is a cryptocurrency with great privacy protections. Equihash is used as a algorithm. This is a memory-oriented Proof-of-work. How much mining you can do is mostly determined by how much RAM you have, making it unlikely for everyone to build ASICs for mining in the foreseeable future...