Nano simulator uses some 3rd party applications as listed below:

Application                       Downloaded from
host\Core\3rdparty\plink.exe      http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
host\Core\3rdparty\pscp.exe       --||--
host\Core\3rdparty\7za.exe        http://www.7-zip.org/download.html