Corvee Tax Planning - Corvee Tax Planning is accounting software for law firms and accountants.
Drake Tax - Look here first for tools and resources to get the most out of starting with Drake.
TaxCalc - TaxCalc is an easy-to-use application to prepare tax returns and calculate your tax.
OIC Tax Planner - OIC Tax Planner is an online solution that helps tax managers to assess, manage and reduce their tax risk.
TaxSlayer Pro - TaxSlayer Pro is a platform that offers tools and features that make filing simple, straightforward, and even enjoyable.
TaxSys - Tax & Revenue Collection