These are programs or services I use. If you use them by clicking on my link I may get a referral reward

And you should too.
How Kryptex Works:

Kryptex is a robust cryptocurrency mining service and mining pool operator that enables users to earn Bitcoins by mining on their computers.

Computers cannot mine Bitcoins directly; specialized Bitcoin ASICs handle that task. With the Kryptex app, you mine altcoins like Iron Fish, Nexa, Zephyr, etc. These altcoins are automatically converted into Bitcoins and added to your balance.