Dictionaries
- Oxford Dictionary
- Oxford Learner’s Dictionary
- Free online Dictionaries
- Cambridge Free English Dictionary and Thesaurus
- Collins Dictionaries
- Merriam-Webster Online: Dictionary and Thesaurus
- Macmillan Dictionary and Thesaurus
- Dictionary.com
- Acronym Finder
- Urban Dictionary
- Definations.net
- Visual Thesaurus
- Vocabulary.com
- Medical dictionary
- Crossword Dictionary
- Legal dictionary
- Online Etymology Dictionary
- Reference.com
- FOLDOC – Computing Dictionary
- The free dictionary
Encyclopedias
- Marathi Vishwakosh
- Wikipedia
- Encyclopedia Britannica
- Free online Encyclopedia
- Infoplease
- Answers.com
- Encyclopedia.com
- Encyclopedia Mythica
- Encyclopedia of Life
- Encyclopedia of Philosophy
- Freebase
- Stanford Encyclopedia of Philosophy
- Bartleby
- Dkonline.encyclopedia
- Scholarpedia
- Who2
- World digital library
- How Stuff Works