HEATKEYS

Huge collection of graphic resource for designer include vector graphic, psd graphic, icons, font, photoshop brush all are free for download.

Readcube is a free, simple, academic software and reference manager for researchers. Read Cube helps researchers organize, annotate and stay on top of new research literature.

PLoS ONE: an inclusive, peer-reviewed, open-access resource from the PUBLIC LIBRARY OF SCIENCE. Reports of well-performed scientific studies from all disciplines freely available to the whole world.

Web site for PLANT PHYSIOLOGY

Scientific Literature Digital Library incorporating autonomous citation indexing, awareness and tracking, citation context, related document retrieval, similar document identification, citation graph analysis, and query-sensitive document summaries. ...

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

Canadian Center of Science and Education (CCSE) is an independent organization delivering supports and services to education and research in Canada and the world.