StoryHarp is an interactive fiction authoring environment focused on making CYOA-style experiences where you pick from a list of choices. It was originally a desktop application in Delphi released in 1998 but has now been converted to JavaScript to run in the browser using JavaScript/TypeScript, Mithril, and Tachyons. You can try it online or check out the GitHub project
The core of the web version works mostly the same as the desktop version with some changes for file handling and navigating between panels. Until we have documentation for the web version, you can peruse the original desktop version documentation.