Sources of http://cistchant.yakub.cz
The Splendor Veritatis website (originally http://splendorveritatis.org, now defunct; since 2024 available at http://unpeudetout.info/splendorveritatis/) contains several Cistercian chant books scanned.
This repository contains sources of a static website providing a simple table of contents for easier navigation in some of them.
(No install needed, only Ruby standard library is used.)
$ ruby app.rbbuilds a static website in site/