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Heysan was a free mobile messaging and community based in San Francisco, California. Initially Heysan provided free messaging between phones and computers, bridging IM with SMS. The service expanded into launching a mobile community and has over 1 million users doing tens of million of monthly messages. In the summer of 2007 Heysan raised a seed round from Khosla Ventures and Atomico, the venture funds of Vinod Khosla and Niklas Zennstrom. Heysan was acquired by Good Technology in May 2009.

Stackq is a SaaS solution for businesses. Founded by Y Combinator alumni, this platform provides innovative tools and services to help companies streamline their operations and achieve their goals. Built with modern technology and user experience in mind, Stackq offers scalable solutions for teams of all sizes.