Engineering

arXiv is a free distribution service and an open-access archive for 2,110,790 scholarly articles in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering and systems science, and economics.

eFunda stands for engineering Fundamentals. Its mission is to create an online destination for the engineering community, where working professionals can quickly find concise and reliable information to meet the majority of their daily reference needs.

WolframAlpha is a computational knowledge engine that generates output by doing computations from its own internal knowledge base, instead of searching the web and returning links. WolframAlpha includes specialized resources for engineering, materials, computational science, and chemistry.

FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. FreeCAD is multiplatform, highly customizable, and reads and writes in a wide variety of file formats.

LibreCAD is a free, Open Source, 2D CAD application for Windows, Apple and Linux.

QCAD is a free, open source application for computer aided drafting (CAD) in two dimensions (2D). With QCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schematics and diagrams. QCAD works on Windows, macOS and Linux.

The National Technical Information Service is a central resource for accessing government-funded scientific, technical, engineering, and business related information. The NTRL Database for access to full text technical reports and bibliographic records for technical reports.

Includes 200 million pages of science information and research and development reports from U.S. Federal Agencies.

The Technical Report Archive & Image Library (TRAIL) identifies, acquires, catalogs, digitizes and provides unrestricted access to U.S. government agency technical reports.

WorldWideScience.org is a global science gateway comprised of national and international scientific databases and portals.

The American Society for Engineering Education is a non-profit member association, founded in 1893, dedicated to promoting and improving engineering and engineering technology education.

The American Society of Mechanical Engineers (ASME) is an American professional association that, in its own words, "promotes the art, science, and practice of multidisciplinary engineering and allied sciences around the globe."

The Association for Computing Machinery is a US-based international learned society for computing.

The Institute of Electrical and Electronics Engineers (IEEE) is a professional association for electronic engineering and electrical engineering

The Society of Women Engineers is an international not-for-profit educational and service organization.