vBagnon is failed v2 of Bagnon. The v part of v Bagnon was due to it implementing virtual windows of your inventory, each tied to a search query. Those virtual windows could be combined into a single window, or broken out into separate displays.
What I basically found, though, was that most people were just using Bagnon as before -- as a single window display for your inventory. So I canceled the project and reverted to a simpler form of Bagnon.
Bits of vBagnon can still be found in LibItemSearch and Combuctor.