Just thought I should log my work. I have been investigating in my free time various technologies as used in OS/2. There are many things which it does which other operating systems do not appear to do and in my opinion, it is pretty sophisticated.
Areas which I have been examining include:
* LX binary loading
* SOM infrastructure
* Presentation Manager -> GRADD
As part of my "WarpBSD" project, I would like to create opensource versions of various key OS/2 technologies. They are unlikely to be bit-for-bit binary compatible but I would hope to be largely source compatible. Of course, ABI compatibility would be nice to run legacy applications ... but not strictly neccessary to begin with.