I use many for typing drill lines. www.freetypinggame.netwww.onlytypinggame.com
I also have recently discovered delicious.com that allows you to enroll free. It is basically a web page that allows you to store all your website bookmarks and to tag each bookmark. This site will sort your websites by tag. For example, I may save some bookmarks for Keying Drill lines under Keying. This will allow me to pull up a page of all htmls that are keying websites. This site is web-based so it can be used in any location and can be shared with others.