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Since 1980, Itasca has pioneered the use and development of numerical modeling codes for solving problems in geomechanics and hydrology. The result is a set of six codes that provide unparalleled speed, power, and proven capability for handling such problems.
Advanced continuum modeling for geotechnical analysis of rock, soil, and structural support in two and three dimensions
Distinct element modeling for micromechanical analysis of geomaterials and particulate systems in two and three dimensions
Distinct element modeling for geotechnical analysis of rock, soil, and structural support in two and three dimensions
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Itasca's first code release was UDEC 1.1 in 1985. Since then, the number of codes developed and sold has risen to seven, and the user-base for Itasca software includes over 5000 licenses of Itasca codes located in more than 42 countries.
Current Releases
Click plus sign for full code history
  FLAC Version 5.0, Released Apr 2005
Version 4.0, Released Sep 2000
Version 3.4, Released Sep 1998
Version 3.3, Released Apr 1995
Version 3.2, Released Nov 1992
Version 3.0, Released Sep 1991
Version 2.2, Released Jun 1989
Version 2.1, Released Nov 1988
Version 2.0, Released Mar 1987
Version 1.0, Released Feb 1986
 FLAC3D Version 3.1, Released Dec 2006
Version 3.0, Released Oct 2005
Version 2.1, Released Mar 2002
Version 2.0, Released May 1997
Version 1.1, Released Jan 1996
Version 1.0, Released Aug 1994
 UDEC Version 4.0, Released Oct 2004
Version 3.1, Released Dec 1999
Version 3.0, Released Oct 1996
Version 2.0, Released Nov 1993
Version 1.8, Released Jun 1992
Version 1.7, Released May 1991
Version 1.6, Released --- 1990
Version 1.5, Released --- 1989
Version 1.4, Released --- 1988
Version 1.3, Released --- 1987
Version 1.2, Released --- 1986
Version 1.1, Released --- 1985
 3DEC Version 4.1, Released Dec 2007
Version 3.0, Released Mar 2003
Version 2.0, Released Dec 1998
Version 1.5, Released Mar 1994
Version 1.3, Released --- 1991
Version 1.2, Released --- 1990
Version 1.1, Released --- 1989
Version 1.0, Released --- 1988
 PFC2D Version 3.1, Released Nov 2004
Version 3.0, Released Nov 2002
Version 2.0, Released Jun 1999
Version 1.1, Released Mar 1995
Version 1.0, Released Dec 1994
 PFC3D Version 3.1, Released Aug 2005
Version 3.0, Released Jun 2003
Version 2.0, Released Nov 1999
Version 1.1, Released Nov 1995
*Starting with version 4.0,  FLAC/Slope versions and release dates correspond with those of FLAC
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FLAC
FLAC3D
PFC2D
PFC3D
UDEC
3DEC