I have recently been putting to use a new tool for mining cryptocurrencies using my CPU called CrytpoTab Browser, it is essentially a browser that has a mining algorithm and so far i am impressed with it.
CryptoTab also have a web application that i became aware of that uses your own hashing power to mine crypto, as long as you are logged in and have the tab open everything else is done for you regardless of which browser you use.
My Hashpower
The above pic shows my own hashpower which is surprisingly low but i do have a lot of applications open at the moment which will take up a lot of my CPU usage, i have seen it as high as 10 H/s though i am using quite an old device so a newer machine will generate way more.
If you are interested in signing up to CryptoTab consider using my link HERE to open an account.