tmate : Tmate is a fork of tmux. It provides an instant pairing / sharing solution for the terminal.
warp : Secure and simple terminal sharing
warp lets you securely share your terminal with one simple command: warp open. When connected to your warp, clients...
Asciinema : Asciinema is a free and open source solution for recording the terminal sessions and sharing them on the web.
herdr : agent multiplexer that lives in your terminal.
workspaces, tabs, panes. mouse-native: click, drag, split. every agent at a glance: blocked, working, d...
SQL Fiddle : A tool for easy online testing and sharing of database problems and their solutions.
ASCII.IO is the simplest way to record your terminal and share the recordings with your fellow geeks. Simply record and upload your terminal session with a single command, and ASCII.IO will play it back in your browser.