Who makes a computer equivalent to Microsoft Surface Pro?

The Microsoft Surface Pro is a tablet while a computer is a computer. They are not the same thing. In fact, they are very different despite the hoopla that marketing professionals and some users try to promote. Think of it this way: a ball peen hammer and a sledgehammer both can hit things and drive them into other things but do they serve the same purpose? No. They are each tools that fit their own specific needs but are not designed to do each other's jobs.

A tablet of any type is designed to do certain things such as check email, browse websites, and have interactive audio/video conversations. A computer can do all this as well, of course, but it can also run applications, store massive amounts of data, provide an environment for software development, perform calculations such as in CAD or complex spreadsheets, interface with just about any type of peripheral, and much much more.

So, if you want a tablet so as to have something lighter for the intended purposes it can serve, go ahead and get a tablet. If you are thinking that it will be a substitute for a computer, forget about it and get a laptop or a desktop.