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.

Invoice Ninja - Invoice Ninja is a free, open-source solution for invoicing and billing customers.

Fyle - Track expenses across devices on-the-go and maintain a central repository. With custom approval flows, automatic policy violation detection and an automated audit trail, be audit-ready at all times!

BillGrid.com - BillGrid is an easy to use online invoicing, billing and expense management system that will save you time with tracking clients projects, expenses, invoices and payments.

Abacus - Expenses without the 'expense report'

MinuteDock - Web-based time tracking software designed to integrate with the Xero accounting package.