Concur is a popular travel and expense management software owned by SAP. Here are five of its competitors:

1. Expensify: Expensify is a cloud-based expense management software that automates expense reporting and reimbursement processes. It has similar features to Concur, including receipt scanning, expense tracking, and approval workflows.
2. Certify: Certify is another cloud-based expense management software that offers a range of features including expense tracking, reporting, and reimbursement. It also offers integration with popular accounting systems like QuickBooks and NetSuite.
3. Rydoo: Rydoo is a cloud-based expense management software that simplifies the expense reporting process by automating expense creation, approval, and reimbursement. It also offers features such as automatic mileage tracking and per diem management.
4. Nexonia: Nexonia is a cloud-based expense management software that allows users to easily track expenses, submit expense reports, and streamline the approval process. It also offers integration with popular accounting systems like QuickBooks and Microsoft Dynamics.
5. TripActions: TripActions is a cloud-based travel management software that offers a range of features, including booking and managing business travel, expense tracking, and travel policy enforcement. It also offers integration with popular corporate travel providers such as Concur, American Express Global Business Travel, and Booking.com.