Mindterm 2 is not free. Comes under a confusing mix of non-commercial and GPL licences. This applet implements the Ssh Protocol 1.5. The Terminal Emulation is almost VT100 compliant. It provides secure communications over insecure networks.
All communications are automatically and transparently encrypted.
Encryption is also used to protect integrity. He used a part of the old Java Telnet Applet to write his Java SSH client and so the code was similar to our old applet.