Wetty - Terminal over HTTP and HTTPS.
Shell In A Box - Shell In A Box is a web based AJAX terminal emulator that can export arbitrary command line tools...
TinyShell - TinyShell is an open source UNIX backdoor.
Onion Terminal - oterm is a web browser unix terminal.
Gate One - Gate One™ is a web-based Terminal Emulator and SSH client that brings the power of the command line...
SerialTerminal.com - A Python Serial interface terminal.