Open Source Java eBook Readers

CoolReader is fast and small cross-platform XML/CSS based eBook reader for desktops and handheld devices. Supported formats: FB2, TXT, RTF, DOC, TCR, HTML, EPUB, CHM, PDB, MOBI. Platforms: Win32, Linux, Android. Ported on some eInk based devices.

Sensei's Library on Tour (SLoT) is a handy Java tool that converts a wiki dump into a set of stripped-down HTML pages that can be easily used for reading on a handheld device or ebook reader.

Book Shepherd helps to manage ebooks, articles, links and other electronic documents.

EBookShelf is a java based electronic books, documents management system. As a web-based application, the system enables users to search, browse and manage ebooks and documents shared by entire organization online.

MyBookshelf is an open-source Android reading app (known in Chinese as “阅读”) that lets users configure custom content sources to read web novels and other online text, offering a flexible alternative to fixed, vendor-controlled ebook stores. Instead of depending on a single provider, it uses “source rules” that define how to search, parse, and fetch chapters from multiple third-party sites, giving users control over where and how they obtain content. The app focuses on delivering a comfortable and customizable reading experience with options for themes, fonts, layouts, and reading behaviors, tuned to the preferences of heavy web-fiction readers. A disclaimer in the project makes it clear that the app itself only provides search and reading tools, and that responsibility for accessed content lies with the user and third-party sites.

The PSP Bookreader allows you to read eBooks on your PlayStation Portable. OK, it isn't really a reader and doesn't even run on the PSP itself, but the name is catchier than "text to JPEG converter". Features preview, configurable output, easy to use GUI.

Bookmark sync tool for ebook readers with xml bookmark system. Primarily focussed on devices based on 4FFF N618 ebook reader, wich uses Adobe Digital Editions for content sync but have no bookmark sync.