InvoicePad is described as 'The all-in-one tool that helps you run your small business. Manage customer relationships, send invoices, accept payments, improve cash flow, create an online presence, and much more' and is a Invoicing software in the business & commerce category. There are more than 50 alternatives to InvoicePad, not only websites but also apps for a variety of platforms, including iPhone, iPad, Android and Windows apps. The best InvoicePad alternative is Invoice Ninja, which is both free and Open Source. Other great sites and apps similar to InvoicePad are Intuit QuickBooks, FreshBooks, Zoho Invoice and FieldPulse.