CallFire Bootstraps 50,000 Signups and Hires Former NetZero CEO
Tech Zulu Event
JULY 16, 2012
.” Founded in 2007 by Ravishanker and a small group of computer science graduates from the University of California, Irvine, the University of Southern California and Harvard University, CallFire has achieved just under $10 million in sales, is profitable and has built that substantial user base–all without venture funding.
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