Esurance was founded in 1998 under the name of SiliconSierra Holdings Inc. Esurance launched its Web site and started writing personal auto insurance in December 1999. As of March 31st, 2006 it has become one of the fastest growing auto insurance companies in America, based on year-over-year premium growth. In 2000 Esurance was acquired by Folksamerica Holding Company, Inc. (a subsidiary of White Mountains Insurance Group). Esurance is now a direct subsidiary of White Mountains.

Insurance.com is an independent, unbiased insurance agency located outside of Cleveland, Ohio. Their goal is to find the insurance company that’s right for you. How do they do that? They bring top insurance companies together in one place, to compete for your business. You can compare multiple rates, and buy the policy that's right for you, all in one easy step, either online or by talking directly with our knowledgeable and helpful licensed agents. Their specialty related to this site is auto insurance and car insurance.

Allstate sells auto insurance, home insurance, life insurance, umbrella insurance, and commercial insurance, to name a few. Its advertising campaign is centered around its "your choice auto" product, which offers accident forgiveness and lower deductibles for all drivers willing to pay an extra premium. Allstate sponsors various sporting events, including the Allstate Sugar Bowl, the Allstate 400 at the Brickyard NASCAR race, and the United States Olympic Committee. Allstate was founded in 1931 as part of Sears, Roebuck and Company.

State Farm was founded as a mutual auto insurance company owned by its policy holders. Despite the companies name, State Farm did not initially begin as a crop insurance company. Specifically, State Farm specialized in auto insurance for farmers. Founder George J. Mecherle believed that since farmers drove less and had fewer losses than city drivers, they should pay less for insurance. His idea was popular with farmers and made his new company successful. Since its inception, State Farm has expanded its services into other popular types of insurance, such as homeowners and life insurance, in addition to banking and financial services. State Farm has grown to include 68,000 employees and 17,000 agents servicing 74 million policies in the United States and Canada, and serving more than 1.8 million bank accounts.

AIG is the world's leading international insurance and financial services organization, with operations in more than 130 countries and jurisdictions. AIG member companies serve commercial, institutional and individual customers through the most extensive worldwide property-casualty and life insurance networks of any insurer. In the United States, AIG companies are the largest underwriters of commercial and industrial insurance and AIG American General is a top-ranked life insurer.

American Family Insurance Group (aka "AmFam") is a private mutual company which focuses on property, casualty and auto insurance, but also offers commercial insurance, life, health, and homeowners coverage, as well as investment and retirement-planning products. AmFam sells insurance and financial products in the following states: Arizona, Colorado, Iowa, Idaho, Illinois, Indiana, Kansas, Minnesota, Missouri, North Dakota, Nebraska, Nevada, Ohio, Oregon, South Dakota, Utah, Washington, and Wisconsin.

The Government Employees Insurance Company, usually known by the acronym GEICO, is an American auto insurance company. GEICO is a wholly owned subsidiary of Berkshire Hathaway and, as of 2006, provided coverage for more than 10 million motor cars, trucks and other motor vehicles owned by more than 7 million policy holders. GEICO writes private passenger automobile insurance in the District of Columbia and in all U.S. states except Massachusetts.

The Hartford is a leading provider of investment products, life insurance and group benefits; automobile and homeowners products; and business property and casualty insurance. The company’s international operations are in Japan, Brazil and the United Kingdom. The company’s earnings are divided equally between property-and-casualty operations and life operations.

Nationwide is one of the largest insurance and financial services companies in the world, focusing on domestic property and casualty insurance, life insurance and retirement savings, asset management, and strategic investments.

The Progressive Corporation (PGR), Progressive Casualty Insurance Company, through its subsidiaries, provides personal automobile insurance, and other specialty property-casualty insurance and related services in the United States. The company operates in three segments: Personal Lines, Commercial Auto, and Other-indemnity.

Safeco Corporation (NYSE: SAF) is a major American national insurance company. Safeco was founded in Seattle, Washington in 1923 by Hawthorne K. Dent as the General Insurance Company of America, a property and casualty insurer. This name is still used by Safeco on some of its insurance products.[1] Thirty years later the company founded the Selective Auto and Fire Insurance Company of America, or SAFECO. On June 27, 2007, Safeco introduced a new service - Teensurance aimed at "providing parents peace of mind while teens earn their freedom"

Farmers Insurance Group is a provider of insurance management services and a holding company. It was founded in Los Angeles, California in 1928 by Thomas E. Leavey and John C. Tyler. It is now a wholly owned subsidiary of Zurich Financial Services, Zurich, Switzerland. Farmers Insurance Group of Companies is based in Los Angeles, California, and operates in 41 states across the country through the efforts of approximately 18,000 employees and services more than 15 million customers. In March 2000, the Farmers Insurance Group of Companies acquired/merged with Foremost Corporation (Foremost Insurance Company) located in Grand Rapids, Michigan.