Servicejoy is an online invoicing, billing, accounting, and project management tool for small business owners. With Servicejoy, you can easily change expenses you incur on behalf of your customers to them by tagging items as billable expenses and adding these to your invoices. You can also enter invoices and get paid in any combination of different currencies. Exchange rates for over 160 currencies are updated automatically. Plus, you can create and schedule professional recurring invoices to manage cash flow and invoice your clients.