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Hello, Chair Inc. was founded in 2006 by Luke Iannini, Mike Jacobs and Kevin Corcoran to explore opportunities in applied machine learning and internet advertising. After receiving funding from Y-Combinator in 2007, we produced Adpinion, one of the first advertising networks to utilize user feedback to drive personalized targeting.\n\nOur core technology — the recommendation engine called SparseReduce — has since proved infinitely adaptable in such diverse problem domains as Amazon product recommendation, eBay auction discovery, image and language comprehension, and Twitter stream exploration.\n\nThe latest application of SparseReduce is Appsaurus, an app discovery platform which was released on the eve of 2010 to overwhelming critical acclaim.\n\nWe're backed by some pretty incredible investors: Harrison Metal, Mitch Kapor, Chris Sacca, Y-Combinator and David Parker to name a few. We're also proud to have Alexis Ohanian as an advisor.

Sqreen is the application security platform for the modern enterprise

Modernizing home health care agencies with software, hardware, and…

Algoriz is an AI based algorithmic trading platform that enables you…

Using AI to predict biochemistry for manufacturing and therapeutics

BookSolid is the opentable for tour operators.

Online tutoring marketplace.

Auctomatic, a Y Combinator company, offers an auction and marketplace management system for all of those individual sellers on such sites as Ebay, Amazon, Overstock and others. The application lets you list your items as well as manage your sales, but it also helps you understand how to best optimize your selling and maximize profits.\n\nThe company also received an investment from Paul Buchheit, the lead developer of Gmail.

Clustrix provides the leading scale-out relational database engineered for the cloud or data center. ClustrixDB is a drop-in replacement for MySQL and an ideal solution for high-transaction, high-value workloads typically found in businesses such as ad tech, e-commerce, gaming, and large web and mobile businesses.\r\n\r\nOur customers use ClustrixDB for critical business applications that support massive transactional volume. ClustrixDB delivers more than twenty-five trillion transactions per month for customers including AOL, Nielsen, Match, MakeMyTrip, Photobox, Rakuten, and Symantec.\r\n\r\nHeadquartered in San Francisco, Clustrix is funded by HighBar Partners, Sequoia Capital, U.S. Venture Partners, ATA Ventures, and Y Combinator. ClustrixDB is available in software that runs on commodity hardware and on any cloud.\r\n\r\nVisit www.clustrix.com to learn more.\r\n\r\nFollow @Clustrix on Twitter and \

Finding wedding vendors is hard. In 2007, a couple started Project Wedding to tackle this problem and eventually grew it into a full-featured wedding planning site. Now part of the WeddingWire Network, Project Wedding strives to make wedding planning easier, less stressful, and more fun!\n\nOver 1 million brides come to Project Wedding monthly to interact with our supportive community and to read our curated editorial content. We know that today's weddings are all about showing off personal style with creative elements, gorgeous color palettes, and unique details. We also know that the contemporary bride is incredibly busy and wants to take care of all of her wedding planning needs in one spot. Enter Project Wedding!

Flagr enables users to share places, adding photos, video and descriptions from their mobile phone. They can then create maps and embed them on any website.

Online form builder.

We sold Snipshot to Ansa in 2013.

Inkling, based in Chicago, Illinois, offers collective intelligence solutions to help organizations make more informed decisions. Inkling's products have been implemented by industry-leading corporations and government agencies worldwide to reduce operational risks, improve forecasting, and gain insights about the organization.

AudioBeta develops web-based applications that helps bands communicate with fans and make informed decisions when planning tours.\n\nAudioBeta is a U.S.-based company that was founded in 2006 by Altay Guvench.

A video subscription platform serving black viewers and creators.

Revolutionizing digital selling within HVAC

P2P Music Sharing

Online polls.