Are there any sites that offer help with U.S. tax applications?

TaxAct.com helps with tax applications at several different tiers. There's a free tax help and audit support option in its software suite, as well as a paid deluxe federal option and ultimate bundle. The software is free to download, with payment due if taxes are filed.

TurboTax SnapTax is a mobile device application that enables the filing of federal and state taxes from smartphones that support the Apple iOS and Android operating systems. H&R Block has a similar mobile application that estimates refund amounts, additional professional help and the status of forthcoming tax refunds. The Jackson Hewitt mobile application monitors tax refunds and locates dedicated tax-preparation services near the user.