GPU Shark is described as 'Simple, lightweight (few hundred of KB) and free GPU monitoring tool, based on ZoomGPU, for NVIDIA GeForce and AMD/ATI Radeon graphics cards. GPU Shark offers a global view of all your graphics cards in a single window' and is an app in the system & hardware category. There are more than 10 alternatives to GPU Shark for a variety of platforms, including Windows, Linux, iPhone, iPad and PortableApps.com apps. The best GPU Shark alternative is HWiNFO (32/64). It's not free, so if you're looking for a free alternative, you could try HWiNFO (32/64) or Speccy. Other great apps like GPU Shark are Open Hardware Monitor, AIDA64, hwinfo and GtkStressTesting.