Cross-platform development
Unix vs NT
- open toolkits and standards -- OMG CORBA
Research/GNU
- AT&T U/WIN -- Posix for 95/NT
- Cygnus -- GNU-win32
Commercial
- NuTCracker/MKS -- porting Unix applications to Windows
- Wind/U, Mainwin -- porting Windows applications to Unix
- Tributary -- developing Unix applications from Windows IDE