calibre - Ebook manager, viewer & converter
ForgeFiction - ForgeFiction is a community-driven platform that transfers 🌌 universe creation and 📜 story writing from individuals to communities. Here you can join forces with fiction fans to create books and fictional universes of all kinds, shapes and forms.
FBReader - FBReader is an e-book reader for various platforms. Features:
Wattpad - Wattpad is now the worlds most popular ebook community where readers and writers discover, share...
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
Commaful - Largest multimedia fiction site in the world. A lot of short stories, poetry, and fanfiction.