A GUI library for designing gauges, meters, oscilloscopes, plotters
...The library supports caching graphical operations and stream I/O for serialization and deserialization. Ready-to-use gauge, meter, oscilloscope widgets are provided as samples as well as an editor widget for WYSIWYG design of complex dashboards. The software is based on GtkAda and cairoada, the Ada bindings to GTK+ and cairo.
PSI stands for Prototype-Simulate-Interact. Its aim is to provide a complete, modular, flexible and easy-to-use framework to prototype dashboards and cockpits.