A man is known by his friends, the devil is known by his fiends
And in a classic phrase of our time, Bryan Sparks, CEO of Device Logics said: "The scrawny, old cow is still giving milk".
DR-DOS was a contender once. Digital Research, which also introduced the GEM graphical user interface, which fairly sped along on the old 286s and 386s of the mid-1980s, could fairly claim its DOS was better than DOS.
Just like our old friends at IBM used to say OS/2 with Win32 support in the early 90s was a "better Windows than Windows". That really cheesed off Microsoft.
DR-DOS was bought by Caldera, then it was spun out to Canopy and tweaked for the embedded market, while DeviceLogics bought it in October.
Here's more about the "scrawny, old cow". µ