Concur - Automated travel and expense management - your employees, travel managers and finance, too.
Driversnote - Your Intelligent Mileage Tracker: Put your mileage log on autopilot. Let your phone track your trips, and get tax compliant mileage reports ready to hand over anytime.
Certify - Travel and Expense Report Management Software
MileIQ - Track miles driven for tax purposes
Egencia - Egencia is a corporate travel management system.
Triplog - Mileage tracking & expense reimbursement