Webilly is described as 'The complete billing software for the wisp, from the creation of the contract, to the invoicing, to the customer management, monitoring and checking all the wisp activities and its business performances' and is an app in the business & commerce category. There are more than 10 alternatives to Webilly for a variety of platforms, including Web-based, iPhone, Windows, Android and iPad apps. The best Webilly alternative is Invoice Ninja, which is both free and Open Source. Other great apps like Webilly are Intuit QuickBooks, InvoicePlane, FreshBooks and Crater.