I couldn't find relevant information or software either... English is my first language and I'm fairly used to official verbiage...
Did pick this out of Google, though:
[ 1. The software has been tested to assure that it runs at "user level" ("power user" or "administrative" privilege is not necessary for the normal operation of the product)
2. The software does not change the core configuration of the desktop during installation ]
Perhaps someone can clarify what 'core configuration' means, beyond being a buzzword?
Those with concerns or operating restrictions that have bearing on install procedures might find the portable version handy --
-- WinSCP seems to store settings in an .ini rather than registry usage anyway, but the portable installer would give you a set of files that could just be copied into a user account, obviating the need for actual installation.
[ Since all federal agencies will only be allowed to use certified applications, it is to the benefit of the developer/vendor to make sure their application is certified, and advertise that fact on your site. ]
Do federal agencies often donate to OSS projects?