An extension of Dev-C++

wxDev-C++
Free
Offline
http://wxdsgn.sourceforge.net/

wxDev-C++ is an extension of Dev-C++ by Colin Laplace et. al. This program helps you to create dialogs and frames for wxWidgets visually using a form designer. With all the wonderful features of Dev-C++, wxDev-C++ is still being actively developed. The main aim of this project is to provide the wxWidgets community with a free, open-source, commercial-grade IDE/RAD tool for development with wxWidgets.