Video:
DJV Imaging: An open source movie player that supports image sequences in EXR format.

3D:
MeshLab: An open source 3D mesh (scan data) editor.
Instant Meshes: A free quad-based autoretopology program
FBX converter: Converts from one version to another and can also be used to preview models and animation takes.

Mac:
XtraFinder: Added functionality for MacOS.
Fira System font replacement,