Main interest is Apricot computers from the 1980's - specifically the Xen and Xen-i.
Current projects - Xen (1986) supposedly running xenix, Xen-i 286, Xen-i 386 and a Xen-S with the usual battery corrosion issues.
Quite fond of the intel based SGI stuff, very fond of NeXT and 90's Apple. Get quite excited when I come across a SparcStation 5 and seem to insist on running NextStep on them. Obscure AIX boxes and Wang (PC and VS)
Software wise - obscure DOS/early windows business apps (Lotus/Information Builders stuff mainly, Improv, Notes, Focus).