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Data Marketplace helps people find, buy and sell data online. It helps users seeking a specific data to creating a request for free, explain their needs, add an optional deadline and budget, and in turn allows aggregators respond with relevant data for purchase. All of the data on Data Marketplace is available for immediate purchase and download. They provide data in standard formats (e.g. Excel, CSV, XML, JSON) . Data Marketplace is funded by Y Combinator.

GazeHawk provides low-cost eye tracking technology for use in usability studies and ad evaluation. Our proprietary technology allows us to use ordinary webcams to run studies. This enables in-home eye tracking, as well as fast, affordable large-scale studies.http://www.gazehawk.com/