2003 establishments in California

American automotive, energy storage and solar power company

Myspace (formerly stylized as MySpace, currently myspace; and sometimes my␣, with an elongated open box symbol) is an American social networking service. Launched on August 1, 2003, it was the first social network to reach a global audience and had a significant influence on technology, pop culture and music. It also played a critical role in the early growth of companies like YouTube and created a developer platform that launched companies such as Zynga, RockYou, and Photobucket, among others, to success. From 2005 to 2009, Myspace was the largest social networking site in the world.

American girl group and dance ensemble

Palantir Technologies Inc. () is an American publicly traded company that develops data integration and analytics platforms enabling government agencies, militaries, and corporations to combine and analyze data from multiple sources. Its flagship products—Gotham (for intelligence and defense) and Foundry (for commercial and civil use)—connect previously siloed databases to support intelligence operations, counterterrorism analysis, law enforcement, and enterprise analytics. Headquartered in Miami, Florida, it was founded in 2003 by Peter Thiel, Stephen Cohen, Joe Lonsdale, Alex Karp, and Natha

concert hall in Los Angeles, California, U.S.

American video game company

American band

multiple-use sports complex in Carson, California, USA

adult entertainment industry award

PLOS (for Public Library of Science; PLoS until 2012) is a nonprofit publisher of open-access journals in science, technology, and medicine and other scientific literature, under an open-content license. It was founded in 2000 and launched its first journal, PLOS Biology, in October 2003.

Theranos Inc. () was an American privately held corporation that was touted as a breakthrough health technology company. Founded in 2003 by then 19-year-old Elizabeth Holmes, Theranos raised more than US$700 million from venture capitalists and private investors, resulting in a $9 billion valuation at its peak in 2013 and 2014. The company claimed that it had devised blood tests that could be performed rapidly and accurately, while requiring very small amounts of blood, all using compact automated devices that the company had developed. These claims were proven to be false.

thumb|Previous Hi5 logo used until 2010. thumb|250px|Map of countries with most users of Hi5 hi5 is an American social networking service based in San Francisco, California. It is owned by The Meet Group.

2003 4D film at various theme parks around the world

Cloud-based data visualization software developed by Salesforce.

American video game developer

American production company

Puscifer () is an American rock group formed in Los Angeles by Maynard James Keenan, lead singer of Tool and A Perfect Circle. Initially Keenan was the only permanent member and he considered the project to be his "creative subconscious". Later, frequent collaborators Mat Mitchell and Carina Round became permanent members.

Professional wrestling promotion

ServiceNow, Inc. is an American software company that supplies a cloud computing platform for the creation and management of automated business workflows. The company was founded in Santa Clara, California, United States, in 2003 by Fred Luddy. It is listed on the New York Stock Exchange and is a constituent of the S&P 100 and S&P 500 indices.

defunct American video game developer based in Emeryville, California

Video game developer

American video game development company

American rock band

American band

mini-park located in the Castro District of San Francisco, California.

American rock band

thumb|right|upright=1.1|HGST's Fujisawa plant, expanded from IBM Fujisawa#Fujisawa manufacturing|IBM's Fujisawa plant HGST, Inc. (Hitachi Global Storage Technologies) was a manufacturer of hard disk drives, solid-state drives, and external storage products and services.

former light rail line of the Los Angeles Metro Rail

Magnatune is an American independent record label based in Berkeley, California, founded in spring 2003. It only sold music for download through its website but added a print-CD-on-demand service in late 2004 and in September 2007 began selling complete albums and individual tracks through Amazon.com. In May 2008, Magnatune launched all-you-can-eat membership plans. From March 2010 Magnatune dropped the CD printing service and moved exclusively to all-you-can-eat membership plans. Magnatune was the first record label to license music online and as of May 2015 had sold over 7,000 licenses in it

Docusign, Inc. is an American software company headquartered in San Francisco, California that provides products for organizations to manage electronic agreements with electronic signatures on different devices. , Docusign has about 1.7 million clients in 180 countries. Signatures processed by Docusign are compliant with the US ESIGN Act and the European Union's eIDAS regulation, including EU Advanced and EU Qualified Signatures.

Linode () is an American cloud hosting provider that focuses on providing Linux-based virtual machines and cloud infrastructure.

Spansion Inc. was an American-based company that designed, developed, and manufactured flash memory, microcontrollers, mixed-signal and analog products, and system-on-chip (SoC) solutions. The company had more than 3,700 employees in 2014 and was headquartered in Sunnyvale, California. It was founded as the joint-venture FASL between AMD and Fujitsu, which eventually was spun out into the independent company Spansion afterwards.

metro station in Los Angeles, California, United States

Los Angeles Metro station

Film and television history museum

American pay television sports channel

band

American video game developer

NFL Network is an American sports-oriented pay television network owned by NFL Media, a joint venture of ESPN and the NFL. Dedicated to American football, the network features game telecasts from the NFL, as well as NFL-related content including analysis programs, specials and documentaries.

nonprofit organization based in San Francisco, United States

BART station at San Francisco International Airport

American production company

Los Angeles Metro Rail station

Los Angeles Metro station

company

Los Angeles Metro station

company which delivers network solutions

freeway-median light rail station in the Los Angeles County Metro Rail system

arena in California, United States

rail station in the Los Angeles County Metro Rail system

American political district

Los Angeles Metro station

Los Angeles Metro Rail station

American musical group

Los Angeles Metro Rail station

Los Angeles Metro Rail station

lifestyle brand by Hilary Duff

band

temple of the LDS church

people mover at San Francisco International Airport