ReciPro supports crystallographic calculations, simulation of/indexing diffraction pattern, and so on.
The newest ReciPro (ver4.362(2018/03/30)) can be downloaded from below links.
ClickOnce version (which can check for newer versions and automatically replace updated files)
Zip file version (if you cannot install above version, download this one)
Recent version historiesver4.362(2018/03/30) Minor improvements.
ver4.361(2018/03/23) Minor improvements.
ver4.36 (2018/03/19) Improved: 'TEMID' is capable of selection of multiple crystals. (need Ctrl + Click).
ver4.35 (2018/03/01) Improved an algorythm of 'Diffraction Simulator'.
ver4.346(2018/02/23) Minor bug fixed.