I'm looking for a minimalist browser (for Windows) to view web apps (web 2.0) pages.
Go with XUL Runner by Mozilla. You can easily customize the interface without losing HTML5 and plugins features. It might be a bit complicated it's better than another options since you don't need to compile everything. You can also try this project that encapsulates some XUL things leaving you the easy part: https://github.com/racklin/xulapp-starterkit/blob/master/README.md
hh.exe is the Windows program used to display compiled help, but it can also browse the web without any plugins, tabs, bookmarks, etc.
Just go to
Run... (Win+R) and type:
It dependent on Internet Explorer settings.
There is also
mshta.exe, HTA engine which dependent on Internet Explorer. Just run: