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The Orientation Library is a collection of routines for rotation/orientation manipulation. It ranges from general tools to others for crystal orientations. It is written in C and is well-documented. An interactive program enables to run the routines.
You can download file releases of Orientation Library project from List of release files
System RequirementsOperating System: OS Portable (Source code to work with many OS platforms), POSIX (Linux,BSD,Solaris etc..), BSD, Windows XP
List of release files