Everlance - The #1-rated mileage and expense tracking app
Avalara - Cut tax compliance costs, not corners. Avalara automates tax compliance and can help improve accuracy while reducing costs.
Tour - Automatic mileage tracking with iBeacon + Foursquare support
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
MileWiz - Automatic Mileage Tracking
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.