LibGuides: Free Engineering Information Resources: Open Source Software

Open Software

An open-source electronic prototyping platform enabling users to create interactive electronic objects.

SciPy

Open-source software for mathematics, science, and engineering

Some Free Computer-Aided-Design (CAD) Software

Grab CAD

Free computer aided design/ drawing database for many types of software.

Open Source Hardware Association

3D Content Central

Free 3D and 2D CAD files. Works with Solidworks.

CAD database; Free downloads of 3D CAD models