> overkill

To write my hard sci-fi novel, I wrote a cross-platform Markdown editor so that I could use interpolated variables along with R code:

https://keenwrite.com/screenshots.html

ConTeXt produces the PDF files. I also developed a few calculators to help confirm physics and other plot-related aspects:

https://autonoma.ca/calculators/

Do you have somewhere an article or similar about the motivation behind this project, i.e. how did you went from "I write a novel" to "I need to write my own editor to write my novel"? That would be really interesting!