EOS Utility is a software utility offered by Canon Inc. for the users of their DSLRs at no extra cost
Canon's EOS Utility software provides a wide range of functionality that can make life easier and improve your workflow.
EOS Utility is installed via the software solutions disk that’s included in the box with every EOS digital camera. It's a part of the software suite provided by Canon that also includes Digital Photo Professional (DPP). Depending on your camera model it will need to be connected to your computer by either a USB or Firewire cable. Official website: Canon Support, DSLR Software