Xero is described as 'Cloud-based accounting for business finances, with automated invoicing, expense tracking, payroll add-on, project tools, and multiple payment gateway support' and is a Invoicing software in the business & commerce category. There are more than 100 alternatives to Xero for a variety of platforms, including Web-based, Windows, Mac, iPhone and Linux apps. The best Xero alternative is GnuCash, which is both free and Open Source. Other great apps like Xero are Odoo, Summit Finance, ERPNext and Paisa - Personal Finance Manager.