i dont mind the offtopic, but even when you stay ontopic you must confess that hotline does not have remote access. so hotline is offtopic.
and i would say that the question if proper user and groups functions or multiclient vs singleclient and these things are an advancement or not depends on your personal needs. in a bigger hotline network users need to open 10 copies of the client program, this is not very comfy.
one must not think that the use of these protocols is limited to what you see publicy.
and it is not only the technical differences. for example HL was adware and KDX is payware. so you could use it to resell it in the form that you install it in clients places.
about controlling the server: i dont know what server software you know, but the original red hat software could not be controlled using only a client.
about "windows": i am not argueing against the use of window services and GUI given by the OS. but i believe the more you rely on apple and microsoft stuff, the less freedom you have. have you ever tried using a hotline client on windows XP? it is a mess.
from within an app it is almost impossible to patch the current system and for this app only. what if you write an app for OS 8.1 and you want it to have draggable window content (i.e. not only zoom rects)? ... you cant. or what about remembering the position for each window individually. try this with a window provided by OS9 or OSX.
you have to write you own windows stuff now anyway to do such things. and if you do, this will now work on any target OS.
this is how kdx look with an OSX 10.2 scheme. the only difference to the surrounding area now is that it is much, much faster, because it does not need to copy stuff from other memory locations and uses only every otehr pixel for movements. and that it will still look the same when apple changes the aqua shit to the metal shit next week. you can also make it look like OS9 on linux. i bet you would like this.
really really offtopic now. bad IIO.
@PTGuy did you try it? are you missing features?