TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
TaxDrop - Get your taxes done in 10 minutes
Vertex Cloud - Vertex Cloud offers sales and use tax automation solutions.
Stripe Atlas Taxes - Help file your business taxes
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.
Taxfyle - Stop doing your taxes, leave it to the professionals.