A couple of small things I noticed on the main app page at https://portableapps.com/apps/utilities/toucan. I'm not a drive-by nit-picker, as I have donated to the PortableApps project.
1) "Rijndael" is misspelled
2) "Rijndael" is more commonly known as AES. It might be better to advertise it as such for less technical users.
And I'd like to second the call for rsync capabilities in this program. Possibly including a call out to PuTTY for SSH encrypting the rsync stream.
Thanks, and keep up the good work, guys!