This applet is a simplified version of the command-line snow, with a user interface added. The line length is fixed at 80 characters and compression is switched on. If a password is specified, then it is used for encryption and decryption; otherwise no encryption is used. In all other respects the applet works the same as the command-line version.
Please note that the Save option may not work due to Java security restrictions. If you can't override this, you might be able to save the cover text using copy and paste.
One final note - this applet makes heavy use of Java 1.1 features, which may not work in all browsers. If all else fails, download the zip file, extract the applet, and run it locally with Sun's appletviewer.