You can find information & resources of science, biotechnology, chemistry, ecology, technology, science resources, mechanical engineering, earth sciences, astrophysics, nuclear & molecular at PortalScience.com
Eng-Tips
Provides links to technical support forums for a range of engineering professions.
http://www.eng-tips.com/
International Engineering Consortium
A nonprofit organization dedicated to catalyzing technology and business progress worldwide in a range of high-technology industries and their university communities.
http://www.iec.org/