See also:

• Science: Chemistry: Directories  (16)
• Science: Directories  (27)
• Science: Earth Sciences: Directories  (12)

This category in other languages:
	Italian  (7)

• eFunda: Engineering Fundamentals - Includes list of chemical elements, bearing designs, processes, constants, standard formulas, and general math equations. Other resources are offered by becoming a paid member, such as, such as data sheets and design guides.
• Engineering.com - A web portal with online calculators, tables of mathematical and physical properties, free downloadable programs as well as links to search engines and companies.
• EngineersWebSite.com - A source of software and technical information for process and control engineers.
• Lab Online - Database of laboratory products and services. Page includes articles on recent discoveries within the industry and research centers.
• Links999 - Portal for information about technology, robotics, security issues, and computing web locations worldwide.
• ParalleMIC - An information center on parallel mechanisms (Stewart platforms, and parallel kinematic machines).
• Sitereview.org - Post science and technology website reviews or read and vote on those posted by others.
• Sol+Gel Gateway - A place where chemists physists, materials scientists, and device technologists meet to invent the materials of the next millennium.
• Systems and Control Engineering Resource Center - A resource for systems and control engineers or researchers.
• Techexpo - Listings of hi+technology companies in engineering, medical and life sciences.
• Temperature World - Temperature related news, links and resources. Topics include science, technology, health, sensors, controls, instrumentation, earth and environment.
• Thermal Connection - Provides a resource site for the thermal design engineer. It features free thermal data, calculators, wizards, FAQs, links and TAK 2000 information.
• Tom Duffey's WWW Links - Portal to personal computers, science, technology and electronic engineering resources.
• Top 20 Engineering - Online directory for engineering education in materials, environmental, aerospace, chemical, civil, electrical, software and other scientific links.