A book-publishing system written in [Racket](http://racket-lang.org). This is the software I use to publish & maintain my web-based books [Beautiful Racket](http://beautifulracket.com), [Practical Typography](http://practicaltypography.com), and [Typography for Lawyers](http://typographyforlawyers.com).
Actively developed, though the pace has slowed now that Pollen is arguably feature complete and stable. I use it almost every day so it's not going anywhere. But I have no plans to substantially enlarge or extend it.