Sleek Bill is described as 'Invoicing software for Mac and PC with custom templates, quick estimates, error-free calculations, auto-complete, PDF/email output, and smart reporting' and is a Invoicing software in the business & commerce category. There are more than 100 alternatives to Sleek Bill for a variety of platforms, including Web-based, iPhone, Windows, Mac and Android apps. The best Sleek Bill alternative is GnuCash, which is both free and Open Source. Other great apps like Sleek Bill are Summit Finance, Midday, Dolibarr and Invoice Ninja.
InvoiceTrackr is software as a service that enables you to input your customers, products and services. You can then create billable line items by time or unit and create pdf invoices based on tracked products and/or services.
