Maybe some already know this but I was curious about who is the actual developer of Studio One.
Presonus is the marketer and Director but they don't write any code for it.
The actual code writers are some heavy hitters in the DAW field:
Wolfgang Kundrus: was early developer of Cubase and primary author of Nuendo.
Matthias Juwan: wrote the VST3 specification.
 
 https://en.wikipedia.org/wiki/PreSonus_Studio_One
 
In 2006, KristalLabs Software Ltd., a start-up company founded by Wolfgang Kundrus and Matthias Juwan, began working on Studio One in cooperation with PreSonus. Kundrus was one of the early developers of Cubase and was the primary author of Nuendo for Steinberg. Juwan had written version 3 of the Virtual Studio Technology (VST) plug-in specification, and written the freeware KRISTAL Audio Engine. KristalLabs later became an integrated part of PreSonus. Wolfgang Kundrus is current Managing Director and Matthias Juwan is chief technology officer (CTO).[1] Other members of the team who also originally came from Steinberg include Maik Oppermann and Eike Jonas.[2]

Some companies that do hardware start adding the software route or vice versa can run into failure.  I was bummed when Tascam stopped Gigastudio. Propellarhead had their own hardware that is dropped. Ableton seems OK so far with Push.  NI has done well with audio units.  There's also Steinberg. I think Tracktion was under Mackie and it fell off the map for 10 years.   Presonus has done well with Studio One. 

kitekrazy1
Some companies that do hardware start adding the software route or vice versa can run into failure.

Yeah, exactly.
With Presonus' track record of not updating drivers for their hardware, I was curious if the same would happen to their Studio One software someday. Now that I see the devs behind Studio One, and its moderate success, I think it is safe to say that it is here to stay for a long time.

kitekrazy1
Some companies that do hardware start adding the software route or vice versa can run into failure.  I was bummed when Tascam stopped Gigastudio. Propellarhead had their own hardware that is dropped. Ableton seems OK so far with Push.  NI has done well with audio units.  There's also Steinberg. I think Tracktion was under Mackie and it fell off the map for 10 years.   Presonus has done well with Studio One. 

Well, thank god for Harrison and Mixbus!