SimPHY : The Physics Simulator
This program lets you visualize Rigid body Physics , create free body Diagram, analyse Constraints, and create simulations based on rigid body 2D Physics.
It also allows user to save and export simulations. It is created to make understanding of physics better.
for more info please visit www.shikharedusoft.com
Author
Mahesh Kurmi
Credits
Willium Bittle:  For his awesome dyn4j library, from which my physics engine is derived.
jogamp:  For jogl library, used for opengl rendering of scene.
apache:  For ftp library
RSyntaxTextArea:  For syntaxpane library used in script editor
jlayer and jorbis: For Mp3 and ogg decoders in audio engine
exp4j: Math parser is based on this tiny and fast library exp4j
thinlet: Gui is based on thinlet library