(Free)
UF Apps is a Virtual Machine Based software that allows UF Students to utalize Free Programs over a VPN Connection.
This includes (Blender, SolidWorks, SketchUP, AutoCAD, ect)
Solid Works
Solidworks is Feature based CAD Program that is quickly becoming an industry standard.
Makerbot
The Makerbot Software is a Slicer (G-code Generator) You may use it to give an aproximation of the weight of your design.
AutoCAD
AutoCAD is Feature based CAD Program that is typically used for large structures but is capable of developing complex assemblies
TinkerCAD
(Free)
A Simple Web Base Cad Software
Blender
(Free)
Blender is a Free Polygon Modeling app that with the right plugin is capable of exporting 3d Printible Models. Blender is not typically used for modeling Engineered Assemblies
Thing-i-verse
Thiniverse is a Database of Solid Parts available for Download.
GrabCAD
GrabCad is an open source Database for 3d Models.
SketchUp
Sketchup was developed by Google as an inexpesive solution for 3d modeling. There are additional features available with a paid subscription.