vatlayer API - Free VAT Validation & EU VAT Rates API
ESP - C language web framework.
MFLicenseCenter.com - Connect to fuel tax licenses for tax determination, return preparation, and reporting compliance.
Katana MRP - Katana Cloud Inventory gives you a live look at all the moving parts of your business — sales, inventory, and beyond. Combining a visual interface and smart real-time master planner, Katana makes managing inventory and manufacturing intuitive.
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
Tango Franchisee Lifecycle Management - Build and manage the right franchisee partnerships that seamlessly integrates franchise and corporate activities into a single view of your business.