1. Cambridge Dictionaries Online

2. Foreign Language Dictionary-French

3. Foreign Language Dictionary-Spanish

4. Librarian's Index to the Internet

5. Merriam-Webster

6. One Look Dictionaries

7. Sahapedia - An open Encyclopedia on Indian Culture and Heritage

8. Scholarpedia

9. Subject Dictionary-Business/Finance

10. Subject Dictionary-Library and Information Science

11. Subject Dictionary-Medical Science

12. Subject Dictionary-Science

13. Subject Dictionary-Technology

14. Wikipedia