Clint
Clint is a library for Qt projects to create charts, trees, etc.
Clint can display data containing in a QAbstractItemModel as charts, trees or timelines.
A chart can be linear ( data are displayed as curves, bars or points), radial ( data are displayed like a bar chart but in circle) or a piechart (2D or 3D).
A tree displays data from a model like QTreeItemModel in a classic tree (horizontal or vertical) or radial (in circle).
A timeline displays data from a model like a QListItemModel following a path.