News : Dual-target 32/64-bit licences

Updated November 2015

Dual-target 32/64-bit Winteracter licences are now available for each of Windows, Linux and OS X, offering support for creation of both program types in a single licence.

Dual-target licences are available for use with Intel or Absoft Fortran on Windows, Linux or OS X. Equivalent licences are also available for use with Lahey Fortran compilers on Windows or Linux. Each licence also includes support for open source compilers (see "What's included ?", below).

Pricing and Licence Conversion

The dual-target licence is priced at £695 (US$1095), a saving of at least 20% when compared to separate single-target licences. Holders of earlier single-target 32-bit or 64-bit licences can convert to a dual-target licence for a one-off conversion fee of £150 (US$240), plus the applicable single-target upgrade fee. See Dual-target (32/64-bit) Licence Conversions on our Price List page.

What's included ?

The dual-target licence includes all the usual Winteracter tools and documentation, but offers the following specific benefits:

  • Both 32-bit and 64-bit libraries are included for use with the chosen commercial Fortran compiler (Intel, Absoft or Lahey).
  • On Windows, 32-bit and 64-bit libraries are included for use with GNU gfortran.
  • On Linux, 32-bit and 64-bit libraries are included for use with each of g95 and Open64 Fortran.
  • On OS X, a 32-bit library is included for use with g95.
  • Both 32-bit and 64-bit Winteracter-based applications can be built on either 32-bit or 64-bit platforms, provided the corresponding compiler and library components are also installed. For example, this includes the ability to build 64-bit applications on 32-bit Windows systems. (A 64-bit Windows or Linux system is required to run 64-bit applications).
  • Both 32-bit and 64-bit versions of the redistributable Winteracter tools are supplied, namely PlotConv, 3Dview, WinterView and (on Windows) the generic installer.
  • Previous restrictions on how to install separate 32-bit and 64-bit licences have been eliminated, simplifying both installation and development. Support for both 32-bit and 64-bit application development can be installed in a single operation.

How to Order

The easiest way to order a dual-target Winteracter upgrade is via our on-line order form. Simply select the appropriate "32/64-bit" option in the Target compiler/platform field and select "Upgrade" under New/Upgrade. Then enter the serial number of the Winteracter licence you wish to upgrade/convert. We will bill you accordingly, on receipt of your order.


  • We continue to offer the same separate single-target 32-bit and 64-bit licences, as previously. Conversion to a dual-target licence is entirely optional. Customers who prefer to stick with a single-target licence can upgrade to the latest release in the usual way, at the upgrade prices shown on our Price List.
  • Dual-target licences are strictly for use with the Fortran compiler combinations listed on our Price List. We do not offer licences for other combinations of 32-bit and 64-bit compilers.
  • As of v10.0, the dual-target licence for use with Intel Visual Fortran on Windows, now also includes 32-bit support for Digital/Compaq Visual Fortran 5.0/6.x, to assist migration from the earlier Visual Fortran compilers.
  • Our usual no-charge compiler transfer option is allowed, when converting+upgrading to a dual-target licence.
  • Customers who already hold separate single-target 32-bit and 64-bit pre-10.10 licences can merge them into a dual-target licence for the cost of one dual-target upgrade, based on whichever licence is older. The conversion fee will be waived in this case. However, only the merged dual licence will be upgradable in future. Customers wishing to merge licences in this way should order a dual-target upgrade and include a note specifying the two 5-digit serial numbers of the licences to be merged. When ordering via our on-line order form, use the Notes field at the bottom of the main form to provide this information. Only licences for the same platform can merged (i.e. two Windows or two Linux, but not one of each).

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Please note : References to "support for" specific third party software do not imply endorsement of same. Refer to Supported Compilers/Platforms for more information.