Leon - Leon is a scheduling software for aviation that helps to manage day to day aircraft operations with sales, crew, OPS & maintenance features.

Expensify - Import expenses directly from a credit card to create free expense reports quickly. Approve reports online and reimburse directly to a checking account with one click.

Aircraft Cost Calculator - Aircraft Cost Calculator is a web-based solution designed to determine the operating costs of aircrafts and helicopters in the database.

Abacus - Expenses without the 'expense report'

AMC Aviation - Airline Maintenance and Engineering

Zoho Expense - Automate your expense reporting process and streamline the approval flow.