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Lahey develops
high-performance
Fortran compilers.


Featured Products
Lahey Fortran Professional v7.7
Windows

Combining the 32/64-bit LGF Silverthrone compiler with the classic Lahey/Fujitsu LF95 compiler, LF Professional v7.7 delivers! LGF Silverthrone has full Fortran 95/90/77 compliance with extensive support for the Fortran 2003 and 2008 standards. Lahey/Fujitsu LF95 offers best in class diagnostics. Includes the automatic-parallelizing GFortran compiler, Lahey/Fujitsu Fortran 95 compiler, Visual Studio 2015 Shell, Lahey's Exclusive Visual Studio Fortran support, Winteracter WiSK Graphics package, and more!
Compatible with Windows 10/8.x/7 (32 and 64-bit) and more!
Download the trial version.
Lahey/GNU Fortran - Silverthrone Edition
Windows 32 & 64-bit

Full Fortran 95/90/77 compliance with extensive support for the Fortran 2003 and 2008 standards; targets 32 and 64-bit Windows. Includes the automatic-parallelizing GFortran compiler, Visual Studio 2015 Shell, Lahey's Exclusive Visual Studio Fortran support, Winteracter WiSK Graphics package, and more!
Compatible with Windows 10/8.x/7 (32 and 64-bit) and more!
Download the trial version.
Lahey/Fujitsu Fortran Express v7.3
Windows 32-bit

Powerful Lahey/Fujitsu Fortran 95 optimizing command-line compiler, linker, command-line debugger, and librarian!
Compatible with Windows 10/8.x/7 (32 and 64-bit) and more.
Download the trial version.
Winteracter v10.10
Winteracter is a Fortran 9x user interface and graphics toolset supporting Microsoft Windows and X Windows. It combines a comprehensive subroutine library with an extensive set of visual tools that simplify the design and development process. Winteracter-based applications can be totally Fortran 9x-based, eliminating the need to resort to compiler-specific features, mixed-language programming or low-level API calls. Winteracter aims to enable scientists and engineers to implement a modern graphical user interface, within a familiar Fortran-specific context.
Available from Lahey's distributors and resellers.
Gino v8.0
Graphics and GUI solutions for Fortran and C from Bradly Associates. Real-time viewing, animation and advanced graphical scene-rendering brings 3D visualization to a new level using fully integrated OpenGL functionality. Now offered with new product configurations!
Available from Lahey's distributors and resellers.
Fortran 95 source checking available. Try the new diagnostic capabilities of Lahey/Fujitsu Fortran v7.3 – online, for FREE! The online LF95 Source Checker offers all the compile-time diagnostics available in our full product.
News
January 4, 2016
Lahey releases
LF Professional v7.7 and Lahey/GNU Fortran - Silverthrone Edition!
November 19, 2015
ISS releases Winteracter v10.10!
December 4, 2014
Bradly Associates releases GINO v8.0!
August 18, 2014
Lahey releases
LF Professional v7.6 and Lahey/GNU Fortran - Lassen Edition!
May 13, 2014
ISS releases Winteracter v10.0!
July 1, 2013
Lahey releases Lahey/Fujitsu Fortran Professional v7.5!
March 8, 2013
Lahey releases Lahey/GNU Fortran - Shasta Edition!