Dunnart is a prototype constraint-based diagram editor. It includes standard diagram editing capabilities, as well as advanced features such as constraint-based geometric placement tools (alignment, distribution, separation, non-overlap, and page containment), automatic object-avoiding poly-line connector routing, and continuous network layout.
Nightly builds for Mac OS X, Linux and Windows can
be found here:
The concept behind Dunnart is to use constraint-based methods to free users from manually maintaining relationships within their diagrams. These could include geometric relationships, non-overlap, object-avoiding connector routes or graph layout. In Dunnart, the user can define these features of their layout and they will be automatically maintained throughout further editing. The user can override or alter these relationships at any time
Dunnart is a research prototype. As such, it lacks some of the features and polish of a professional diagram editor. Many of the significant features of Dunnart are implemented in the open-source Adaptagrams constraint layout libraries and are described in my publications and/or PhD thesis.