Drake Tax - Look here first for tools and resources to get the most out of starting with Drake.
Avalara - Cut tax compliance costs, not corners. Avalara automates tax compliance and can help improve accuracy while reducing costs.
Taxaroo - Taxaroo enables you to automate your tax workflow. Includes automated organizers, document storage, payments, e-signatures, analytics and more.
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
TaxDome - Tax Practice Management
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.