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Ark.com is a search engine for people. With Ark, you can search for new people, old classmates, new business contacts, and even your friends. With over a billion social network profiles indexed, and using a modern architecture, Ark provided the most comprehensive people search engine in the world. Prior to founding Ark, our team has experience at Google, AOL, Symantec, Lithium, Yahoo! Research and Y-Combinator.

Rapportive shows you everything about your contacts right inside your inbox. You can immediately see what people look like, where they're based, and what they do. You can establish rapport by mentioning shared interests. You can grow your network by connecting on LinkedIn. Imagine relationship management built into your email. For free.