Gaphas

Gaphas is a highly efficient diagramming widget that is exclusively designed for GTK+. This Python-based widget utilizes Cairo_ for rendering, which essentially makes it an MVC canvas. One of the most admirable features of this widget is that it doesn't require the user to perform bounding box calculations as Cairo_ handles it all.

With Gaphas, users can easily create quality diagrams while focusing on their core tasks without worrying about the technical aspects of the widget. The use of Python and Cairo_ makes Gaphas quite lightweight yet fast and reliable. Moreover, the widget comes with a vast range of customization options, making it highly versatile for creating different types of diagrams.

Overall, Gaphas is an excellent option for those looking for a functional and efficient diagramming widget for their GTK+ applications. Its effortless integration, versatility, and ability to handle complicated calculations make it a reliable tool for any user.