Okay, it looks like we've got:
Fully independent:
* Amiga
* DOS
Needs a proxy to do TLS:
* MVS
* Win 95
* Mac
Needs a proxy to do internet:
* Apple II
* Commodore 64
Offline operation. Syncs with a computer:
* Palm
Okay, it looks like we've got:
Fully independent:
* Amiga
* DOS
Needs a proxy to do TLS:
* MVS
* Win 95
* Mac
Needs a proxy to do internet:
* Apple II
* Commodore 64
Offline operation. Syncs with a computer:
* Palm
I figure most of these require connecting to a real computer to do the internet stuff or the TLS stuff. Are there any that can actually stand on their own? I imagine the most likely candidates are Mac, Amiga, DOS, and Win 95.