BVHplay is a free, lightweight, Python-based, multi-OS, open-source playback utility for BVH animation files. Features include mouseless camera control, optional grid and camera position displays, frame-by-frame step buttons, and a slider bar.
PhotoProbe is a program to help you explore and compare your digital photos. It displays them arranged in a 2D matrix according to the camera settings you choose, allowing you to know the influence of each setting at a glance.