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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Most stock quote data provided by BATS. Market indices 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.

Factset: FactSet Research Systems Inc. 2014. All rights reserved.

Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved.

Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor’s Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2014 and/or its affiliates.