ngrok - ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.
Stoic.today - Guess if stoic quotes are real or GPT3 generated?
Pagekite - Bring your localhost servers on-line.
WikiWhat - Guess censored Wikipedia articles by the first paragraph.
Gotty - GoTTY is a simple command line tool that turns your CLI tools into web applications.
Daylio - Daylio enables you to keep a private diary without having to type a single line.