Here's a list of some useful and creative Java applets on the Web. Please add descriptions (with URL) of other applets that merit inclusion.
A complete JavaLanguage implementation of a SecureShell client in an applet. This is useful because if you are on a machine where you can't or don't want to install software, you can still fire up a Java-enabled WebBrowser and get to any ssh-ready server you want. http://www.mindbright.se/products/mindterm/