reTax allows you to use your mobile as a VAT calculator.
This tool calculates between two different VAT rates while
you type. The rates are kept between different executions of
this programs and are completely user defined.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.