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Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

Oxford Advanced Learner

Find and compare the most popular iOS apps. Our iOS apps comparison is based on price, genre, developer, release date, summary, and more.

The largest and most trusted free online thesaurus. Quickly find accurate and up-to-date synonyms, antonyms, and related words at Thesaurus.com. Synonym dictionary, antonym dictionary, words synonyms.

iPhone App Reviews, iPhone Game Reviews, and iPhone News -- the best iPhone and iPod Touch application reviews, news, new releases, and price drops

Zotero is a powerful, easy-to-use research tool that helps you gather, organize, and analyze sources and then share the results of your research.

For iPhone developers who love their apps, App Annie keeps tabs on your apps, making it easy to track sales, rankings, and reviews from around the world.

iPad, iPhone and iPod touch app store listings, news, and price drops

XYO is the most comprehensive, interesting way to discover mobile apps from all over the world. Find new stunning apps for Android, iPhone, iPad and Windows Phone on XYO.

World's #1 place for 360 photography. Stunning panoramas from over 90 countries. Explore, license, commission stock photos. Join us, learn, and publish!

Track and analyze your app sales. Supports iTunes, Android Market, RIM App World, Windows Phone 7 Marketplace, Amazon Appstore, Handango, MobiHand, and more

Download the latest iPhone apps, popular iPod music, hot iPad movies and price-cut apps for iPhone, iPad and iPod in the store.

Google+ aims to make sharing on the web more like sharing in real life. Check out Circles, Messenger and Hangouts, just a few of the things we've been working on.