DiffImg

DiffImg Portable
image comparison tool
DiffImg Portable is a simple image comparison tool which takes two images with the same size
as input and shows the differences between them.

Blender

Blender Portable
3D on the go
Blender Portable is the open source software for 3D modeling, animation, rendering, post-production, interactive creation and playback packaged as a portable app, so you can do your rendering on the go.