Chronicler is described as 'open source desktop application which allows users to create CYOA/MCG (choose your own adventure/multiple choice games) interactive fiction using a GUI not dissimilar to Twine (i.e. in the style of a flow chart)' and is an app in the Development category. There are more than 10 alternatives to Chronicler for a variety of platforms, including Windows, Self-Hosted solutions, Mac, Linux and Online / Web-based. The best alternative is Twine, which is both free and Open Source. Other great apps like Chronicler are ChoiceScript (Free, Open Source), Ink by Inkle (Free, Open Source), Dedalus (Free, Open Source) and Undum (Free, Open Source).
ChoiceScript is a simple programming language for writing multiple-choice games (MCGs) like Choice of the Dragon. Writing games with ChoiceScript is easy and fun, even for authors with no programming experience.
Yarn Spinner is a tool for creating interactive dialogue for games. Write your conversations in Yarn, a simple programming language that's designed to be easy for writers to learn, while also powerful enough to handle whatever you need.