Paged.js is a free and open-source library that paginates any HTML content to produce beautiful print-ready PDF. The library fragments the content, reads your CSS print declarations and presents a paginated preview in your browser that you can save as PDF.

Adam Lynch explains in this post how he lays out data-heavy tables, how he supports resizing of columns, and more.

Tachyon animate by Andrew Nater is a single purpose classes to help you orchestrate CSS animations.