PUBLIC MARKS from kalley with tag library

Danish National Library Exhibits (this is where Danish Birds derives) There's some books online here incl. tycho Brahe and others (a few)

Check out Musipedia, "a searchable, editable, and expandable collection of tunes, melodies, and musical themes." At the time of this writing, Musipedia had over 30621 melodies and musical themes in its database; with new ones being added every day. One of most intriguing features of Musipedia is its Keyboard Search. You can search for music actually using the notes on the piano to guide your search - this is the first time I've ever seen anything even remotely like this and I just thought it was way cool. In addition, you can search for music by whistling a tune (no joke). From the site: "The applet at the bottom of this page can analyze your whistled input and calculate the Parsons code, which you need for a search. For some people, singing works better than whistling. It is also conceivable that certain musical instruments work still better."

算法词典 这个辞典包含有大量的关于数据结构，算法，和计算科学方面相关问题和解答

Catalog your books online 给书tagging的网站.免费版的LibraryThing可以为200本书打上Tag. 可以方便的搜索