Where the Web 2.0 stars were born

Every year thousands visit the garages where Hewlett-Packard and Apple were hatched. But the hottest tech companies out there weren't all started in a car lot.

Linden Lab
5. Linden Lab
Founded: 1999
First Address: 333 Linden St., San Francisco, CA
Second Life was born on narrow Linden Alley in San Francisco's quaint Hayes Valley neighborhood. Founder Philip Rosedale worked in the warehouse with a single engineer. Three years later he moved to a larger office on, naturally, Second Street. Company headquarters are now in San Francisco's financial district, while the original space on Linden is occupied by a Moroccan furniture store.

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Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.