The free "Elementary OS" comes with Linux substructure, but is based in many places but rather on Apple's OS X - just optically makes that in many ways noticeable. In particular, the dock, the system settings and the active corners are reminiscent of OS X.
"Elementary OS" comes with a small software selection that covers many daily use cases. Music and video players, image and document viewers are on board as well as browsers and messengers. New software can be installed with just a few mouse clicks via the "Software Center". Countless well-known open source and freeware tools are available for free download here.