Scribbl
Scribbl is an online application for managing scribbls. Notes, appointments, contacts, bookmarks, and everything else can be saved. Use tags to quickly find what you're looking for.
Taggl
Taggl takes the data from your online accounts at tag-supporting applications and gives you a tag-based view on all those items. See the list of applications that we currently support.
It also does a public search where you can search for specific tags in all available data, not just yours.