Top 10 FB2 readers

Free e-book reader that supports multiple file formats, including ePub, fb2, mobi, HTML, RTF, HTML, plain text, doc, and more. FBReader uses its own page parsing and rendering engine - very lightweight, fast and customizable. It supports embedded images, footnotes, hyperlinks, text search, full-screen reading. It also automatically creates bookmarks so you don't lose track of where you left off after closing a book. It works on iOS, Android, Windows, Mac OS, Linux, and Chrome OS. Books can be synced across devices or stored in Google Drive. For Android and iOS there are both free and paid versions. Free versions have some limitations.

AlfaReader is a lightweight and fast ebook reader, ideal for reading electronic magazines, student textbooks, medical, scientific, technical books, illustrated books for kids. Allows to make bookmarks, save knowledge blocks, add comments, download books for OPDS. Includes built-in audiobook player. Integrates with popular ebook organizer Alfa Ebooks Manager.

Cute and simple mobile app for reading books on iOS and Android. Provides bookmarks, 3-colors highlights, interactive links and notes, dark mode, customized settings (Fonts, Fields, Text size, screen Brightness, Page scrolling, ets). Suppots text formats: EPUB, MOBI, DOC, DOCX, TXT, FB2, PRC, RTF, ODT, HTML, AZW, AZW3. Completely AD-FREE. Syncs ebooks and reading progress between devices. Free web e-reader is also available. You can upload books via iTunes, import your files from the email, web browser, cloud storages (iCloud, Google Drive, Dropbox, Yandex.Disk etc).

Popular Android app that lets read books offline or directly from online book sites and OPDS. It features a comfortable viewing mode with smooth scrolling, full set of visual settings: line spacing, font size, bold, italic, shadow, alpha channel, smooth edge transitions. Over 10 built-in themes, including a day/night mode switch. Various page navigation options: touchscreen, volume keys, even the camera, search, or back buttons. The free version is ad-supported, while the paid version offers TTS engine, PDF support, more beautiful backgrounds, fonts and reading themes, password protection on startup, annotation sharing, reading statistics.

Desktop reader that supports EPUB, MOBI, FB2 and CBR formats (DRM-protected content is not supported) and provides basic functionality for managing your digital library. Allows to read in full-screen mode, night mode, track your reading progress, use bookmarks, search inside text, adjust the font family, font size and line spacing, set the text layout to two or one page. You can add notes, search and sort notes by text or color. Copying text from books and adding notes are only available in the paid version, which also offers text-to-speech (different voices available depending on your system settings) and text translation.

i2Reader is an innovative and award-winning eBook reader. Support of EPUB, PDF, RTF, HTML, FB2, DOC and plain text formats. One-way built-in Web server to upload books and dictionaries from your computer. Custom-made PDF rendering engine that reformats the text from PDFs for easier reading on the iPhone screen.

EBookDroid is a highly customizable document viewer for Android. EBookDroid supports the following ebook and document formats: DjVU, PDF, XPS (OpenXPS), FictionBook (fb2 and fb2.zip), Comics Book formats (cbr and cbz), plus - starting with version 2.0 - EPUB and RTF. EBookDroid 2.0 provides the following extra tools: text selection, highlighting, text notes and page notebooks, free-hand annotations, external dictionary support.

Free open-source, XML/CSS-based e-book reader for Windows and Linux. There's also mobile version for Android and some eInk devices. Supported formats include FB2, TXT, RTF, DOC, TCR, HTML, EPUB, CHM, PDB, and MOBI. The program offers numerous settings for improved reading experience. It's arguably the best reader for Linux, but on Windows, it has some issues, such as linking e-book extensions to the program so it opens when clicking on a book file.

Free Android reader that supports formats fb2, fbz, txt, epub, html, doc, odt, rtf, mobi, prc, archives. Its local library allows to sort books by author, series, title, year of publication, genre. The app provides such functions as converting text to speech, downloading from OPDS, setting file encoding, dictionaries, editing Fb2 and TXT files, profiles with independent settings of font, color, brightness, gamma correction and text indentation. You can choose one- and two-page reading mode with automatic switching to two-page mode in landscape orientation. Appearance adaptation for E-Ink screens, support for "fast" update for Sony T1/T2, Nook Simple Touch/Nook Simple Touch with Glow Light, Onyx Maxwel/Kopernik/Kepler, Texet 138.

Free online service in which you can upload, preview and read your ebooks in EPUB, MOBI, AZW3, PDF, and CBR formats. Doesn't require downloading any software. Even large ebooks are rendered instantly. It provides easy book navigation thanks to a built-in thumbs pane and table of contents and full-text keyword search. It offers numerous customization options to enhance your reading experience. You can customize the font size, typeface, color scheme to make reading as comfortable as possible. You can also adjust the brightness to suit your surroundings and reduce eye strain.

KOReader is a document viewer for E Ink devices. Supported file formats include EPUB, PDF, DjVu, XPS, CBT, CBZ, FB2, PDB, TXT, HTML, RTF, CHM, DOC, MOBI and ZIP files. It’s available for Kindle, Kobo, PocketBook, Android and desktop Linux.

Multi-functional Android app for reading books. It features automatic folder scanning and adding books to the library, bookmarks, annotations, TOC, online catalog and dictionary support, syncing between Android devices via Google Drive (reading progress, bookmarks, etc.), day and night modes, custom CSS support, "Musician mode" with adjustable scrolling speed, TTS reading, built-in media player and online format conversion. The volume control functionality, background and fonts can be customized. All collections can be viewed in a list or grid view. Books are easily identified by thumbnail covers with adjustable size and style, as well as detailed descriptions. The free version contains ads.

iOS e-reader unlike any other. The app supports FB2, EPUB, MOBI, PDF, DJVU, CBR, CBZ, and TXT formats, and offers customizable fonts, paragraph indents, paper type, and much more. iBouquiniste features include note-taking, emailing books, bookshelves by author, recently opened book view. Books can be downloaded via iTunes or any app that supports file transfer (such as Mail or Safari). OPDS catalogs are supported. The app also provides its own cloud storage for syncing books, reading positions, quotes, and bookmarks.

Not only an eBooks, Comics reader but also a tons-of-free-ebook-downloader, with dictionary inside for you to studies languages.

A simple, focused eBook reader for Linux. Read the books you love without having to worry about different format complexities like epub, pdf, mobi, cbr, etc.

Okular is a universal book viewer based on KPDF for KDE 4. This means Okular works on multiple platforms, including but not limited to Linux, Windows, Mac OS X, *BSD, etc. Okular combines the excellent functionalities of KPDF with the versatility of supporting different kind of documents, like PDF, Postscript, DjVu, CHM, XPS, ePub and others.

eReader Prestigio: Book Reader is a multi lingual, multi format text and audio books reading app. Intuitive interface in over 25 languages and an in app store library with over 50,000 text (for children and adults) books and Text-To-Speech (read along) functionality.

ReadEra is an Android application for reading books and viewing documents, free and without ads. Open and read book files in EPUB, FB2, PDF, DJVU, MOBI, DOC, RTF, TXT and CHM formats. Automatically detects and displays the list of all supported documents on your device, Identifies duplicate files. Support for a table of contents, bookmarks, visual styles. Automatically saves the current reading position, even if the files are moved or temporarily deleted.

Freda is a free program for reading electronic books (ebooks) on Windows and Android. On Windows, it's a Universal App, which means it runs equally well on your desktop PC or tablet PC, and on your Windows Mobile phone. On Android, it works on any phone or tablet running Jellybean, Kitkat or any more recent version of the operating system.

ShortBook is an electronic book reader using unique capabilities of your iPhone. It has everything that is necessary for comfortable reading of books in fb2 format: contents, figures, footnotes and unique text makeup. Handy interface allows finding books quickly and reading them with comfort. Night reading mode will reduce discomfort for those who suffer from sleeplessness and Quick Bookmark function will ensure free browsing through a book. Book downloading is available via Wi-Fi being handily implemented through the web browser. For your further comfort there are options of choosing font, its size and other settings.

FB2Reader for Google Chrome allows you to read FB2 books right in the browser. The books that you add to the reader are stored in the internal browser repository, so the reader doesn't require internet.