Notion Template Gallery - Built by our community, editable by you
calibre - Ebook manager, viewer & converter
Notion Pack - All the freelance docs you need, as Notion templates.
FBReader - FBReader is an e-book reader for various platforms. Features:
Notion Pages - Discover new, productive Notion templates
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.