QDevelop
QDevelop is a free software integrated development environment specialized on the Qt4 framework and C++.
It uses gcc for building and gdb for debugging.
It supports Source code editor with syntax highlighting with native support for Qt Keywords and integrates different Qt Tools such as Qt Designer and qmake. QDevelop's Editor features code completion and automatic indentation. There's also a project management system and a class browser that enables the programmer to navigate through classes and data structures.