One of Atari's successes can be regarded as the MegaST series. Building on
the success of the ST machines (520, 1040) they produced a more professional
box with 4mb of RAM, TOS 1.2 and something else not many competitors had at
the time - a laser printer. This was because everybody else's laser printer
had the printers brains actually IN the printer; Atari kept costs down by bolting
the printer onto the DMA connection for external disks like the Megafile series
of hard drives - an interface box produced the required signals to make the
printer work and some nifty coding on Atari's part made sure the machine wasn't
crippled when it was printing since essentially the CPU of the MegaST did all
the work.
This machine sold like hot cakes, particularly since Atari had solved the common
users complaint of spongy keyboards on ST series machines - they used membrane
type keyboards whereas the MegaST used proper keyswitches. Software houses like
Gribnif (who are still going) produced alternative desktops to the ubiquitous
GEM desktop (NEOdesk in this example), and the result was something like the
machine seen in the pix below :)