Publisher's description - Runway 1.0
Runway is an elegant UML Design app for Mac OS X, that is both simple and powerful. Runway gives you all of the most important features you need in a Diagramming app, as well as an easy-to-use Class Diagram tool without all the extra cruft, at an affordable price.
Runway is great for Programmers and Web Designers looking for a simple tool for quickly designing Charts, laying out Wireframes, or visualizing Model Relationships.
Runway has support for "connected" lines. When resizing lines, the lines magnetically snap to other shapes. Then, as you drag the connected shape around the canvas, the connected lines adjust themselves as well.
Runway lets you get to work quickly by giving you just the important tools you need in a slick, single-window, thoroughly Mac-native UI.
Runway also includes full support for modern Mac OS X features like Quick Look, Full-Screen Mode, Autosave, and Version Browsing.