KDevelop

KDevelop is a free and open-source integrated development environment (IDE) for Unix-like computer operating systems and Windows. It provides editing, navigation and debugging features for several programming languages, and integration with build automation and version-control systems, using a plugin-based architecture.KDevelop 5 has parser backends for C, C++, Objective-C, OpenCL and JavaScript/QML, with plugins supporting PHP, Python 3 and Ruby. Basic syntax highlighting and code folding are available for dozens of other source-code and markup formats, but without semantic analysis.
KDevelop is part of the KDE project, and is based on KDE Frameworks and Qt. The C/C++ backend uses Clang to provide accurate information even for very complex codebases.