Avalara - Cut tax compliance costs, not corners. Avalara automates tax compliance and can help improve accuracy while reducing costs.
Cash App Taxes - Cash App Taxes (formerly Credit Karma Tax) is a fast, easy, 100% free way to file your federal and state taxes.
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
ClearTax - ClearTax is an income tax return e-filing solution.
Vertex O Series - Centralize and streamline indirect tax management across the enterprise.
UsTaxes.org - Open source tax filing web-app