Sesame Street Alphabet Kitchen - Entertaining vocabulary-building app to help children with early literacy skills.
Silicon Valley Dictionary - Urban dictionary meets Silicon Valley
ABC Kids - Fun, tracing and phonics app to teach kids the English alphabet.
Reverse Dictionary - Describe a concept and get back a list of words
Home Kg - Just another WordPress site
Dictionary Anywhere - Dictionary Anywhere is an open-source and easy-to-use browser extension for Mozilla Firefox and Google Chrome that allows you to check definitions easily while browsing the web.