Be more specific of the two types you want!
There are many different vendors for the 2 most common types of computers. Dell and Apple are 2 majors vendors.
IBM and Cray Inc.
Today supercomputers are the fastest computers available and are used by military and defense research agencies, universities, independent research centers and some engineering corporations. Major vendors of these computers include IBM and HP.
The major vendors in the market right now are IBM (itself has 90% market share), Groupe Bull, Unisys, HP and Oracle (Sun Microsystems).
What software vendors partner with Dell computers?
Sony and Dell.
For personal Computers it's Dell and Microsoft.
Software are programs that are run on a computer, that work in conjunction with the computers operating system. Software vendors are vendors that sell products to work with your computer.
SunMicro Systems and IBM
personal computers were more affordable (apex)
There are many different major vendors for mobile phones and handheld devices. Among the tops are Apple, LG and Samsung.
Macintosh computers are a personal computer.