Koreader is an ebook reader application that can be ran on android and e-ink devices. It is also available for desktop Linux Installation on desktop Linux · koreader/koreader Wiki · GitHub
Personally I want this container to be made because I frequently read books on different PC/Laptop, phone and e-reader, but there’s no universal reading progress sync since each platform has its own reader software. By having koreader being accessible on the web, I can use koreader on PC/Laptop without needing to install it, and use Koreader sync server for reading progress sync to my e-reader.