I'm not certain just what you mean. There are some reputable companies that will cut a kit for you from plans. Its a little expensive, but I hear good things about them. There are good companies that make kits. Many of the kits companies here in the states are going out of business. Its difficult to compete with the cheap ARF's from China and the Far East that are built using something very much like slave labor.
There are still a few good kits companies left. Sig has been around for a long, long time and makes wonderful "sport" kits and a few scale kits. You generally can't go wrong with Sig kits.
If you are looking for something a little more scale, then they are getting difficult to find. My source is Ebay. But beware. 90% of the kits there are absolutely junk. If you don't know your way around and know which kits are the good ones, you probably should not attempt to shop there.
Could you be a little more specific about the types of planes you wish to build ? And do you mean kit cutters or kit manufactures ?