Known Freely Available Software (or software still being chased):

Additions/Corrections/Changes Welcome. Most structure drawing programs, single crystal programs, single crystal suites and some Rietveld programs include Bond Length and Bond Angle Calculation facilities.

Refer:

• Available software and resources for performing Bond Valence Calculations

• Available Software for Crystal Structure Drawing and Visualisation
• Available Single Crystal Suites linking to multiple programs relevant to Chemical Crystallography

Drawcrys/ORFEE DOS executable and Fortran Code Contact: David Close (R29CLOSE@ETSU.EAST-TENN-St.EDU) "The purpose here is to provide a simple method for expanding crystallographic information to study crystal packing. One inputs the standard crystallographic coordinate information and then uses the program DRAWCRYS to generate a unit cell and then to add more unit cells onto the original unit cell." Home site at http://www.ccl.net/cca/software/SOURCES/FORTRAN/drawcrys/