Taxaroo - Taxaroo enables you to automate your tax workflow. Includes automated organizers, document storage, payments, e-signatures, analytics and more.
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.
TaxDome - Tax Practice Management
TaxSlayer Pro - TaxSlayer Pro is a platform that offers tools and features that make filing simple, straightforward, and even enjoyable.