ePub, fb2, and other book formats reader for all platforms. Free, fast, and highly configurable. Network book sources, adding custom OPDS. C
For the people who (regarding the current Ebooks Direct offering, or others) have been asking about a way to open ebooks that's not dependent on a dedicated device:
I just wanted to add a link to this, as FBReader will run on/under Windows (10/11), iOS, Android, Mac OS, Linux, and Chrome OS.





















