Reverse Dictionary - Describe a concept and get back a list of words
Meja - Pitch your ideas, get constructive feedback!
Silicon Valley Dictionary - Urban dictionary meets Silicon Valley
Pitchdeck - Pitch Deck is a web-based solution to you create engaging presentations.
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.
GoToPitch - GoToPitch.