While at Badajoz, my tOSSad colleague Al Harris pointed me to a fantastic del.icio.us browser they developed at KnowNet.
You can try out the del.icio.us browser online. It’s fantastic! The top window allows you to browse for bundles and tags. It provides a slide to minimize or maximize the number of displayed tags:
Beneath the tag browser, the list of items and related tags is being displayed:
The browser is JSON-powered. Feel free to contact Mike Malloch of KnowNet if you’d like to see the code. Al did not know the license, he basically told me that they are happy to share and don’t really care about licensing – sounds like true Open Source 🙂