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). It comprises various visual development tools and a substantial subroutine library, which is compatible with many modern Fortran compilers.

The toolset is now maintained on a non-commercial, voluntarily supported basis. Users who held an up to date (v16.0) licence at the time of the I.S.S. closure can obtain the latest version, via this site.


Current version : 16.20a

Package Highlights

  • Create desktop GUI applications using Fortran 9x/200x
  • GUI controls based on native Windows/Motif components
  • Totally Fortran based, no mixed language programming
  • No low level API access required
  • Visual tools simplify GUI design
  • Meaningful names make code easier to read/maintain
  • Mature platform-independent graphics
  • Substantial operating system interface
  • Numerous graphics hardcopy/export formats supported

Recent News

Recent Forum Posts

TopicLast post byRepliesForum
Resource.rc no compilingLawson
16th Apr 2025 12:44		1General support
NVERT-2 triangular sub-facets in convex polygonsCarlosAriza
11th Apr 2025 14:55		93D modelling
Which compiler do you use ?Kim Frankcombe
31st Mar 2025 14:31		7Compilers and 3rd party IDEs
Version 16.20Admin
29th Mar 2025 21:19		0Announcements
Linker error after installing Intel 2025.1 Fortran CompilerLawson
28th Mar 2025 22:30		3General support
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