Wherefour - Wherefour is an ERP (enterprise resource planning) solution used for managing customer relationships, and inventory, etc.
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
entree - Entree
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.
Sage Intacct - Intacct is a cloud-based accounting and financial management system that is designed for the businesses of all levels.
Vertex Cloud - Vertex Cloud offers sales and use tax automation solutions.