What do you call research that has no hypothesis? Background:
I'm just wondering - I'm writing my bachelor's "thesis" in information-systems management, which should in theory be a paper about a hypothesis I make, an experiment and an evaluation.

I have an "experiment" which is comparing reality of information-systems management to various theories of information-systems management.
I have my evaluation.

But my "thesis"... is basically my assumption based on experience that says: "theory is based on assumptions that practice do not always exist". And my "experiment" neither proves nor disproves this triviality, but is supposed to show how you can tailor the management theory for it to be useful under economic constraints to a real specific problem.

Question: 
What should I call this thing, since it isn't a thesis?
It is a thesis. From what you've written, your hypothesis is that 


  you can tailor the [information-systems] management theory for it to be useful under economic constraints to a real specific problem


You might also be doing exploratory research, or blue-skies research, where you don't start with a research question, you start with a direction, subject or area, and go wandering off looking for interesting problems.