For example, what Mirek is using now when developing U++.
Usually TheIDE and brain
I never got real taste for those methodologies. The only practical benefit I can see is to describe the real world, but then again, with U++ writing the prototype code is only a small bit harder...
So my currect methodology can be described as "code first, ask later". It is more economical for me to rewrite the bad app from scratch than to go through any tedious "metodology" process.
But perhaps it is just because all of these years I have spend coding...