Pretty early on in my time writing software, I built a screenshot hosting web app and a tool for deploying static websites on subdomains of my site from the command line. I still use them very regularly, and they were excellent projects for learning full stack web dev.

I can run `atu file.png` and have a link to it copied to my clipboard a second later. I added options for creating secret URLs, auto-deleting after time or after views, and other features like that.

For the subdomain hoster (I named it phost), I can run `phost create subdomain directory` and the directory will be uploaded and served on `subdomain.mysite.com`. I have commands for updating and deleting as well, and versioning built in.

It's extremely useful for quickly deploying little demos or one-off projects without having to commit to set anything up on a cloud console or edit NGINX config files.