Reverse Dictionary - Describe a concept and get back a list of words
Resoomer - Resoomer is a software and online tool for text summary: it allows you to summarize and analyze your articles by taking up the important concepts
Silicon Valley Dictionary - Urban dictionary meets Silicon Valley
SMMRY - Summarize articles, text, websites, essays and documents for free with SMMRY.
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.
Free Summarizer - Summarize *any* text online in just a few secs. *MAGIC*