In my own mind these are DAWs that are designed to be virtual recreations of hardware midi studios. They typically contain racked synths, drum machines, pattern sequencers and effect boxes. They also typically do not record digital audio and lack audio tracks (but not always). And IMO they are usually a lot more fun to compose in or sketch out ideas than traditional linear DAWs like Cubase, Logic and Pro Tools.
Reason is probably the only one that still exists on the market today. All the rest have faded away into the history books but they deserve to be remembered.
Synapse Orion Platinum
This one had great synths like Ultran and one of the best loop based sequences. The mixer had coloured EQs which sounded fantastic.


Arturia Storm Studio
Honestly this was a toy.


Cakewalk Project5
Cakewalk Project5 which was discontinued prematurely, soon after v2.5 launched. It had a very loyal following.



Ultrano Virtual Studio


