FBReader vs qView

FBReader is an ebook reader for Windows, macOS, Linux, Android, and iOS. It opens formats including ePub, fb2, mobi, HTML, RTF, and plain text, as well as ePub books protected with Readium LCP. Its Book Network can synchronize collections, reading positions, bookmarks, and custom shelves across supported devices. Books in the network are stored in the user's Google Drive space, while metadata, covers, and reading positions are stored on FBReader servers.

Online OPDS book catalogues are supported on Android, Windows, macOS, and Linux; iOS support is planned. Android Premium adds PDF and comics support, Google and DeepL translation integration, and automatic reading aloud. The free iOS version is limited to ten books and disables online translators. FBReader offers free plans for desktop, Android, and iOS; Android Premium is $14.99 as a one-time purchase. The company says its current code is closed source.

qView is a free, open-source image viewer designed to keep the image prominent, with a title bar and no toolbar clutter. It supports common formats including BMP, GIF, JPG, PNG, TIFF, and WebP, as well as RAW images and color management. For browsing, it includes animated GIF controls, file history, rotation, mirroring, and multithreaded preloading. Preferences are configurable. The maker describes qView as quick to open and light on memory and CPU. It is based on Qt5 and licensed under GPLv3, with a listed price of free. Windows downloads include 64-bit installer, 32-bit, and standalone options; the installer requires Visual C++ 2015 or later. macOS options include a DMG for macOS 12 or later, a legacy download for macOS 10.13 or later, and Homebrew. Linux choices include distribution packages, AppImage, Flatpak, and a source tarball. The download page also links to bug reporting, Discord, translation contributions, and nightly builds.