tmate - Tmate is a instant terminal sharing based on ssh.
Wetty - Terminal over HTTP and HTTPS.
Gotty - GoTTY is a simple command line tool that turns your CLI tools into web applications.
Bastillion - Bastillion is an open-source web-based SSH console that centrally manages administrative access to systems.
Warp - Warp (Windows Advanced Rasterization Platform) is a high-speed software rasterizer tool designed for the accurate reproduction of bitmap graphics on modern microprocessor-based systems.
TinyShell - TinyShell is an open source UNIX backdoor.