StatCounter - StatCounter is a simple but powerful real-time web analytics service that helps you track, analyse and understand your visitors so you can make good decisions to become more successful online.
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
AFSAnalytics - AFSAnalytics.
Vertex Cloud - Vertex Cloud offers sales and use tax automation solutions.
Woopra - Track your customers' web and mobile activity, forms, emails, support tickets and more, all in one place with customer analytics. Analyze and take action.
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.