have my own collection of portable apps, need a way of getting updates using FTP or something cloud - ideas?

Hi,

my product has Christian software for people in countries where spreading the gospel might be illegal or dangerous.

I have lists of streaming radio stations, sometimes the IPs of these change or stop working.

I wrote a script to get updates using FTP using DOS but its clunky and difficult to manage. One of the free FTP accounts got terminated for being not used enough, (seems couple of times a month wasnt enough!)

I'm wondering if theres a portable FTP app (open source or ok to be given away as part of my product) or a cloud app that can be configured to silently to update a few very small files.

From the user's perspective, the app needs to just work quietly in the background and not a big list of commandline stuff which would look a bit scary.

thanks

Yosef