Winteracter is a graphics and GUI toolset for Fortran 90 or later. It was originally developed and sold by Interactive Software Services Ltd. between 1997 and 2024, growing out of the earlier I.S.S. INTERACTER package (1989-2001).

I.S.S. has now closed. Winteracter has moved to a non-commercial, voluntarily supported status, at its new home of www.winteracter.uk. Users who held an up to date (i.e. v16.0) licence at the time of closure can obtain support and the latest version, via the new site. For the time being, Winteracter version 10.0-16.0 licence holders can still download updates here, as listed on the Updates page.

This site will be removed in the near future.