HEATKEYS

Internet Archive is a non-profit digital library offering free universal access to books, movies & music, as well as 150 billion archived web pages.

Rap Genius is a rap lyrics encyclopedia that anyone can edit. Discover the meaning of rap...in clickable popups!

Twitter is without a doubt the best way to share and discover what is happening right now.

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...

The easiest do-it-yourself tools for creating and promoting an online petition. For free!

Prezi is the zooming presentation editor

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

Create, record and share the sounds you create anywhere to friends, family and the world with SoundCloud, the world

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.

Offers bookmark synchronization, search enhancement and web discovery based on sites bookmarked by users.