Seashells – Pipe output from command-line programs to the web in real time
I created something similar years ago and it's open source:https://stream.ht/Try it out, you can pipe your terminal:  exec > >(nc stream.ht 1337) 2>&1

Or just pipe a file:  tail -F file.log | nc stream.ht 1337

Pipe htop (delay is required to see share url)  (sleep 5; htop) | nc stream.ht 1337

Doesn't require installing anything! Requires netcat which is installed on most *nix systems but you can use a plain tcp socket connection to pipe data too:  exec 3/dev/tcp/stream.ht/1337 && head -1  >(tee >(cat >&3))