

TL DR I reluctantly use Calibre, because there's no alternative, eReader conversion is needed for Kindles, DRM, etc. You basically need Calibre if you use Kindle/Kobo/any non-Android eReader Works best in conjunction with Android eReaders.

Not great for searching through, but works. Arrange books in folders, name them, use Everything to search for them, keep metadata in text/DOC files. Alfa eBooks Manager ( site seems to be down at the moment more bloated than Calibre, but at least it let you keep your folder structure).That said, KOReader seems to have some native support for Calibre libraries Calibre Companion seems kinda useless, and since getting an Android eReader, I've often wished I'd just stuck to folder structures. Quite complicated to use until you get used to it, rather slow due to Python codebase. Calibre forces you to organise your books by tags and lose your folder structures, good for searching metadata, converting for Kindle, stripping DRM, a swiss army knife.Ebook management software is rare, and I only know about:
