RealMint is an ANSI terminal emulator and telnet client written completely in JavaScript. When installed, RealMint lets you login to your server from a web browser using telnet and an encrypted HTTPS tunnel.
A "Clientless" VNC solution implemented with Ajax technology. You can remote your PC anywhere without pre-installing any client. As it is purely HTTP, you can VNC even behind firewall or proxy. Java VNC server able to run on Windows/Mac/Linux.