I'm trying to install SublimeREPL on an offline computer (it has secure data and so can't be Internet-connected). Any ideas for how to do so?
I can copy any installation files to a USB drive, but haven't found any--everywhere I've seen insists on using the Package Manager (which requires connection to function properly)
You could try download and install SublimeREPL using Package Control on a computer with an internet connection and then in Sublime Text go to preferences > Browse packages… where you should find a folder named SublimeREPL. Copy that folder to the same directory on the other computer. That should work.