Search Engines for Research

Sweet Search
Sweet Search helps students to quickly find the information they need. All websites recommended on Sweet Search have been evaluated by research experts.
www.sweetsearch.com/

Refseek
Refseek is a custom Google search page that limits commercial results and ads. It gives you a less cluttered list of results, and ignores all the "ask" sites that aren't appropriate for your projects.
www.refseek.com/

Virtual Learning Resources Center
"The Virtual Learning Resources Center indexes thousands of the best academic information websites, selected by teachers and library professionals worldwide, in order to provide students and teachers current, valid information from school and university academic projects!"
www.virtuallrc.com

Infotopia
Infotopia is an academic search engine which access trusted websites reviewed by library and education professionals.
www.infotopia.info