TurboTax® Tax Preparation Software, FREE Tax Filing, Efile ... - 
TurboTax is the #1-rated, best-selling tax software. Free Edition includes free IRS efile. Easily prepare your tax return and file income taxes online. Choose Easy.
http://turbotax.intuit.com/

TaxACT - 
Download the standard version of this tax preparation software for free, or purchase deluxe or state versions. By 2nd Story Software, Inc.
http://www.taxact.com/

H&R Block - 
Tax return preparation services, resources, software, and advice from H&R Block. Includes both do-it-yourself and assisted online return preparation options.
http://www.hrblock.com/

Tax preparation - Wikipedia, the free encyclopedia - 
Tax preparation is the process of preparing tax returns, often income tax returns, often for a person other than the taxpayer, and generally for compensation. ...
http://en.wikipedia.org/wiki/Tax_preparation

Jackson Hewitt Tax Service - 
Jackson Hewitt Tax Service provides income tax preparation, tax prep training and tax franchise opportunities throughout the United States
http://www.jacksonhewitt.com/

TaxBrain.com - 
Online income tax preparation service from TaxBrain. Prepare and e-file state & federal income taxes online starting $14.95. It's Easy, Fast, Secure, and IRS authorized.
http://www.taxbrain.com/

Business Tax Preparation - Tax Prep Partner Series - 
CCH® Tax Prep Partner Series™ intelligently integrates a complex tax compliance library (comprised of focused research) with unique tools and practice aids to create ...
http://tax.cchgroup.com/tpp/default.htm

IRS Tax Information For Individuals - 
Find out about exemptions, learn how to estimate tax liability, and read about the latest news regarding personal taxes from the IRS.
http://www.irs.gov/individuals

Income Tax Preparation Service | Liberty Tax Service - 
Quality income tax preparation service by Liberty Tax Service - a leading international tax preparation firm.
http://libertytax.com/

IRS Free File - 
If your adjusted gross income was $54,000 or less, you can use Free File to prepare and e-file your taxes online.
http://www.irs.gov/efile/article/0,,id=118986,00.html