An extensive analysis comparing bitcoin and privacy coins

With the use of CoinJoin, several transactions are combined into one, making it difficult to identify the sender and recipient. One privacy currency that is based on CoinJoin is Wasabi Wallet.

Ring signatures and confidential transactions (like Monero)

Monero offers excellent privacy guarantees by obscuring transaction amounts and sender/receiver details through the use of Confidential Transactions and Ring Signatures.

Proof-Based Zero-Knowledge Privacy Coins (like Zcash)

By utilizing ZKPs, Zcash enables users to demonstrate ownership of funds without disclosing specifics of transactions. This offers selective openness and a great degree of privacy.