Zcash partner of Ethereum.

The Zcash project is evolving, Ethereum Zcash's collaboration is getting stronger and both blockchains have mutual benefits.
Of course, the blockchain world may often seem less friendly and collaborative, as technologies are always in competition with each other ... But this is not always true.
Progress to incorporate Zcash's anonymity into Ethereum is the proof

For the time being, the two blockchains have three semi-official projects. For example, some may know that Vitalik Buterin, creator of Ethereum is a Zcash consultant and that Zcash's CTO Nathan Wilcox described projects as the inevitable result of an organic interaction among developers in the Criptovalute sector.

The idea behind the Zoe project (Zcash on Ethereum) is an informal initiative and would seem to mean technology behind Ethereum and Zcash. As you may have heard, Ethereum's biggest advantage is its flexible smart language Contract that allows developers to write a self-executable program. On the other hand, Zcash is unique and its encryption hides the sender's, recipient's and transaction's amount data, causing its blockchain to be completely anonymous.

One of Ethereum's developers, Christian Reitwiessner, who has been in the Smart Contract programming language, Solidity, was one of the people who picked up the witness. According to him, the project of Ethereum that wants to incorporate the so-called zk-SNARKS was the driving force that pushed him into the first instance to work in the ethereum community.
More recently, Reitwiessner had the opportunity to explore the project in detail to see how it could be used for smart contract technology and published a long blog post on jobs that began last December.

But there is also another project. It is called Project Alchemy and aims to build a fate of "bridge" between Zcash and Ethereum blockchains.
In particular, the purpose of Alchemy is to make it easier to switch from Zcash to Ether without a centralized entity that manages trade.

The process should work this way:
If a user wants to sell their own ether, this opens a smart contract order on ethereum. The order will not run until someone wants to sell their zcash and the seller will not receive the correct zcash amount at the selected address.

Project, according to my opinion, very interesting.