Open Book: an Open Source eBook Reader | Open Book is an interesting new project. What do you think of it? | By It's FOSS | Facebook
Building An Open Hardware EBook Reader | Hackaday
Koodo is an All-in-one Open Source eBook Reader App for Linux
GitHub - koreader/koreader: An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Cervantes, Kindle, Kobo, PocketBook and Android devices