Chrome
A PDFmyURL chrome extention can be downloaded here
Firefox
A PDFmyURL Firefox extention can be found here
Joomla
A PDFmyURL Joomla CMS module can be downloaded here
Wordpress
Include the following line of code in an appropriate location inside your loop/ template
<a title=”Download as PDF” href=”http://pdfmyurl.com?url=<?php the_permalink() ?>”>Download this post as PDF</a>