OTS is an easy-to-use text-based C-program for calculating Tax Form entries and tax-owed or refund-due, for Federal or State personal income taxes. Includes versions for US 1040, Scheds A, B, C, D, L, and forms for several states.
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.