Free:
Full-text Databases:

Journals:

Dissertations

Books:

Data (a good open source for presenting data http://www.statsilk.com/)

Library catalogs

Repositories: (attached a list of repositories in the region)

Science Portals (well-selected websites)

Tools useful to researchers:
A: Journal impact and evaluation: (good for academia)
http://www.scimagojr.com/index.php
http://www.eigenfactor.org/
http://www.uifactor.org/
http://www.impactfactorsearch.com/
http://globalimpactfactor.com/journals-list/
http://Scholar.google.com
B- Citations: