DL2
DeskLink+ is a basic "TPDD server" implimented in plain C.
dlplus is a fork of an earlier program called "dl" which was an open-source clone of an even earlier closed-source program called Desk-Link.
Current/Latest dlplus (may possibly rename this to "dl 1.5")
dlplus (could also be thought of as "dl 1.4", although it doesn't say that itself)
Last version of the original MS-DOS closed-source Desk-Link