faced heavy competition from Connectix with their Virtual PC product. Insignia sold the product line to FWB Software in October 1999 in order to focus on supplying implementations of Java for the mobile device market. FWB continued to sell SoftWindows until March 2001. FWB Software also marketed a separate version of the software that did not include a bundled copy of Windows, called RealPC, until 2003. Unlike most emulators, the SoftWindows product used recompiled Windows components to improve performance in most business applications, providing almost native performance (but this meant that, unlike SoftPC, SoftWindows was not upgradable). See also Windows Interface Source Environment References IRIX software NeXTSTEP software Solaris software OpenVMS software X86 emulators