It's used to encrypt and decrypt files.
You must use cmd.exe for this, it's not like clickable application..

It's a command one.
It's for people who kinda understand a bit of it.
You may have problems with downloading tools from that site.
So if you are interested, download it from here;
^This package contains;
- 9DCryptTool
- 9DENCTool
- QuickBMS with 9d script
- XPacker
And here are virustotal scans;


If you still don't understand, go here;
and read
VoLamDinh's Guide.