| Dictionaries | Encyclopedias |
| One Look Dictionary | Kids Click! |
| Infoplease | World Book Student |
| Word Central | Fact Monster |
| Merriam-Webster Online | Altapedia - facts plus on countries |
| Dictionary.com | Encylopedia.com |
| LibrarySpot Dictionary | |
| Wordsmyth | |
| Big Huge Thesaurus (synonyms, antonyms, and rhymes) | |
| Thesaurus.com |