GtkStressTesting is described as «GST is a GTK system utility designed to stress and monitor various hardware components like CPU and RAM» and is an app in the system & hardware category. There are more than 25 alternatives to GtkStressTesting for a variety of platforms, including Windows, Linux, Mac, GNOME and MATE. The best alternative is Open Hardware Monitor, which is both free and Open Source. Other great apps like GtkStressTesting are HWiNFO (32/64), Sidebar Diagnostics, HWMonitor and Stats.GtkStressTesting alternatives are mainly System Information Utilities but may also be Fan Speed Tools or Benchmark Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of GtkStressTesting.