= Leanpub
https://leanpub.com
Founder: Peter Armstrong
The general idea is publishing entire books with usual copyright, but with gradual updates.
http://ruboss.com/ documents their stack, a somewhat similar choice to <OurBigBook.com> as of 2021, notably <Next.js>. But backend in <Ruby on Rails>. They actually managed Apollo/<GraphQL>, which <Ciro Santilli> would have liked, but din't have the patience for.
The founder/CEO Peter Armstrong https://www.linkedin.com/in/peterburtonarmstrong/ He looks like a nice guy.