FAHBench is the official Folding@Home benchmark. Like the Folding@Home "cores" being executed by hundreds of thousands of donors across the world to solve hard problems in protein dynamics, FAHBench is built on the molecular dynamics engine [OpenMM]. FAHBench works on any OpenCL device, as well as CUDA-capable Nvidia GPUs. FAHBench is available as a GUI or command-line based application for Windows and Linux. It is licensed under GPLv2.