Privacy Preserving protocols and their future?

[cryptomarcianos]

Privacy-preserving protocols are the backbone of blockchain technology, a technology that has promised secure transactions and communication. What are the Privacy-preserving protocols available to blockchain-based technology?

Some projects are still in the research phase, some of them do not even have a token yet. Some of them yet to launch their mainnet, like Concordium its a very interesting project and well researched but could not find much details about the token. Lets make a concrete list of them.

Some of the of the projects I have heard of are :

1. Monero

2. ZCash

3. Concordium

4. Komodo

5. Grin

6. Beam

7. Priate Chain

8. Horizen

9. Particle

10. Tari

11. Verge

12. Ghost

Do you know any more? Did I leave any famous projects? What do you think will happen to our privacy in the coming years?