This was Solera Network's first GUI of any kind for their network packet capture appliance, and we had to create it without requiring any customization or API, and without having a database. All data had to come live from the system or be stored in a single XML file (for user validation). Interestingly enough, for the bulk of this project, the we had to build this without the chief engineer on the project knowing we were creating a GUI. We did this by executing command line instructions and parsing the output. At the end of the project, their new CEO decided to in-source all development and add an API. You can see on their website that they have updated it to a new look, but it is just a snappier look on the same content and UI.