TaxDrop - Get your taxes done in 10 minutes
Octobat - Octobat provides automated tax-compliance and accounting for digital businesses.
Stripe Atlas Taxes - Help file your business taxes
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
Taxfyle - Stop doing your taxes, leave it to the professionals.
Avalara - Cut tax compliance costs, not corners. Avalara automates tax compliance and can help improve accuracy while reducing costs.