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Bastillion - Bastillion is an open-source web-based SSH console that centrally manages administrative access to systems.
Wetty - Terminal over HTTP and HTTPS.
strongDM - Trust strongDM to manage an engineers access to everything
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.
Guacamole - Access your computers from anywhere. Because the Guacamole client is an HTML5 web application, use of your computers is not tied to any one device or location. As long as you have access to a web browser, you have access to your machines.