i buy most ebooks from a small local bookstore. for the rest there's still zlib
never stopped using rss/atom with ttrss ๐ช
luckily we have this cybersecurity export to get that info
even windows xp had it with microsoft's powertoys' virtual desktop manager
simply use this on android: https://f-droid.org/de/packages/com.svenjacobs.app.leon/
i buy most ebooks from a small local bookstore. for the rest there's still zlib