When I was younger I learned that Sed was turing complete. So I did was any young woman would do. I build an entire search engine in Sed. But it wasn't like a useless little search tool that provided bad search capability for a website, no, nearly every page (minus a few like the about page) of a site was nothing more than a presentation on top of the search query results. Several thousand hardcoded "known" pages and infinite possible pages depending on user searches. Because it was the foundation of the site, search worked unlike most websites searches of the era (~2005). This site happily ran for about a decade with surges of traffic now and then before a server migration and too little time prevented its continued existence.

Adult me is both horrified and impressed at this creation.