I worked for Oasis Systems/FTL Games back in the early 1980s; we had software than ran on the Osborne 1 ("The Word Plus" spelling checker; "Punctuation + Style" grammar checker). In fact, if I remember correctly, we used a utility package running on the Osborne 1 to create most of our other 5.25" CP/M disk formats; there was no standard 5.25" disk format for CP/M, and so we had to create different disks for most different computers running CP/M.
Adam Osborne was actually a columnist for InfoWorld who, after complaining about the state of the personal computing market, decided to take action and start his own computer company. The Osborne 1 was a success (within the scope of the tiny nascent PC market at the time), but he pre-announced the Osborne II too far in advance of being able to ship it, saw his Osborne 1 sales dry up, and ended up having to shut down the company due to lack of cash flow. If you've ever heard anyone refer to "the Osborne effect", that's what they're talking about.
Not much nostalgia here, though -- I'll take my modern laptops, desktops, and digital devices (iPhone 4, iPad 1) over an Osborne any day. ..bruce..