Marklets.com is a beta site that searches specifically for bookmarklets from throughout the web.
Read an earlier post that explains bookmarklets
Marklets.com even has a bookmarklet of its own that lets you search for and use the bookmarklet you need without leaving the website you're visiting. This one bookmarklet gives you access to the internet's largest bookmarklet database.
DISCLOSURE OF MATERIAL CONNECTION: http://cmp.ly/0