With Dash you have an open ledger just like Bitcoin (Dash is forked from Bitcoin for compatibility reasons), but you can choose to mix your funds with other users
through a decentralized and trustless system thats actually inside your wallet and you can build up a private amount in there.
This can be done from 1 to 8 rounds, with 8 rounds forming to strongest anonymity.

You can then PrivateSend an amount from your builded-up private amount to another address and the transaction history trace will be obfisquated,
making it extremely difficult to trace your transaction on the open ledger by third parties.

Monero and Zcash are anonymous cryptocurrencies by nature, the option to provide traceable transactions for all to see is lacking there.
  
With Dash Evolution you will have different type of accounts (spending, saving, private). The private account will automatically and instantly gets mixed with other users
and be ready for use. Dash Evolution is scheduled for the end of this year, with an alpha release scheduled mid summer.  

link : https://www.dash.org/evolution/