Flexbox Labs is a visual tool for learning and experimenting with CSS Flexbox. It lets you adjust layout settings in real-time, view changes instantly, and export the HTML/CSS code.

ntfy is a simple HTTP-based pub-sub notification service. It allows you to send notifications to your phone or desktop via scripts from any computer, and/or using a REST API.

curl \
  -d "Backup successful 😀" \
  ntfy.sh/mytopic

Free notifications!