In 2001, I wrote a tag balancer (for HTML input, it also did some rudimentary XSS filtering) in PHP and then translated it to Cold Fusion (I was applying for a CF job and figured it might be useful to actually learn it). I believe that both variations are still running, the CF version on Metafilter, and the PHP version was used in B2, which became WordPress. A few years ago, I was asked by the WP team to relicense th…
Isn't that the story of PHP itself, too?