Blender - Blender is the open source, cross platform suite of tools for 3D creation.
ScrollMagic - The jQuery plugin for magical scroll interactions.
FreeCAD - An open-source parametric 3D modeler
Lax.js - Create beautiful & smooth animations when you scroll
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
ScrollReveal - ScrollReveal is a tool to add scroll animations for web and mobile browsers.