vatlayer API - Free VAT Validation & EU VAT Rates API
Synder - AR Automation
VatStack - Simplify VAT & GST for your digital business.
vat-search.eu - VAT (Value Added Tax) ID - Numbers Search Lookup
Transiteo - Calculate customs duties and taxes on your online store.
TeamLogger - Simple, employee time-tracking software with automatic screenshots and activity level monitoring. $1 / User / Month.