Browse free open source eBook Readers and projects for Mac below. Use the toggles on the left to filter open source eBook Readers by OS, license, language, programming language, and project status.

  • Agentic AI SRE built for Engineering and DevOps teams. Icon
    Agentic AI SRE built for Engineering and DevOps teams.

    No More Time Lost to Troubleshooting

    NeuBird AI's agentic AI SRE delivers autonomous incident resolution, helping team cut MTTR up to 90% and reclaim engineering hours lost to troubleshooting.
    Learn More
  • Next-Gen Encryption for Post-Quantum Security | CLEAR by Quantum Knight Icon
    Next-Gen Encryption for Post-Quantum Security | CLEAR by Quantum Knight

    Lock Down Any Resource, Anywhere, Anytime

    CLEAR by Quantum Knight is a FIPS-140-3 validated encryption SDK engineered for enterprises requiring top-tier security. Offering robust post-quantum cryptography, CLEAR secures files, streaming media, databases, and networks with ease across over 30 modern platforms. Its compact design, smaller than a single smartphone image, ensures maximum efficiency and low energy consumption.
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  • 1
    KOReader

    KOReader

    An ebook reader application supporting PDF, DjVu, EPUB, FB2, etc.

    KOReader is a document viewer for E Ink devices. Supported fileformats 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. Runs on embedded devices (Cervantes, Kindle, Kobo, PocketBook, reMarkable), Android and Linux computers. Developers can run a KOReader emulator in Linux and MacOS. Multi-lingual user interface with a highly customizable reader view and many typesetting options. You can set arbitrary page margins, override line spacing and choose external fonts and styles. It has multi-lingual hyphenation dictionaries bundled into the application. Custom UI without animation, with paginated menus, adjustable text contrast, and easy zoom to fit content or page in paged media. Look up words with StarDict dictionaries / Wikipedia, add your own online OPDS catalogs and RSS feeds, share ebooks with other KOReader devices wirelessly.
    Downloads: 95 This Week
    Last Update:
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  • 2
    Cool Reader

    Cool Reader

    A cross-platform XML/CSS based eBook reader

    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.
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    Downloads: 411 This Week
    Last Update:
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  • 3
    Calibre eBook Manager

    Calibre eBook Manager

    Open-source software suite for e-book management

    Calibre is a useful and powerful eBook Management System. Calibre has the ability to view, convert, edit, and catalog e-books of almost any e-book format. This open source ebook manager and e-reader solution give you a free access to read and manage your digital book collection with ease.
    Downloads: 61 This Week
    Last Update:
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  • 4
    Koodo Reader

    Koodo Reader

    A modern ebook manager and reader with sync and backup

    Koodo Reader is an all-in-one ebook reader that can help you better manage and study your ebooks. It's free and open-source. Save your data to Dropbox or Webdav. Customize the source folder and synchronize among multiple devices using OneDrive, iCloud, Dropbox, etc. Single-column, two-column, or continuous scrolling layouts. Text-to-speech, translation, progress slider, touch screen support, batch import. Add bookmarks, notes, highlights to your books. Adjust font size, font family, line-spacing, paragraph spacing, background color, text color, margins, and brightness. Night mode and theme color. Text highlight, underline, boldness, italics and shadow. Adjust font size, font family, line-spacing, paragraph spacing, background color, text color, margins, and brightness.
    Downloads: 55 This Week
    Last Update:
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  • Loan management software that makes it easy. Icon
    Loan management software that makes it easy.

    Ideal for lending professionals who are looking for a feature rich loan management system

    Bryt Software is ideal for lending professionals who are looking for a feature rich loan management system that is intuitive and easy to use. We are 100% cloud-based, software as a service. We believe in providing our customers with fair and honest pricing. Our monthly fees are based on your number of users and we have a minimal implementation charge.
    Learn More
  • 5
    Anx Reader

    Anx Reader

    Featuring powerful AI capabilities and supporting e-book formats

    Anx Reader is a polished, feature-rich e-book reader built with Flutter, designed for seamless reading across mobile and desktop. It supports major formats (EPUB, MOBI, AZW3, FB2, TXT) and integrates powerful AI tools for summarizing and intelligent navigation via OpenAI, Claude, Gemini, and DeepSeek. Anx also syncs progress, notes, and highlights over WebDAV, and offers rich analytics—including heatmaps and exportable reading summaries. UI customization and text-to-speech enhance the reading experience.
    Downloads: 37 This Week
    Last Update:
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  • 6
    Epublifier

    Epublifier

    Converts some webnovels to epub format

    A tool to convert website-based books or lists of pages to ePub format to read on your eReader/Kindle/etc.
    Downloads: 12 This Week
    Last Update:
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  • 7
    Graphics Programming Black Book

    Graphics Programming Black Book

    Markdown source for Michael Abrash's Graphics Programming Black Book

    This is the source for an ebook version of Michael Abrash's Black Book of Graphics Programming (Special Edition), originally published in 1997 and released online for free in 2001. Reproduced with blessing of Michael Abrash, converted and maintained by James Gregory. The version which Michael and Dr. Dobbs released in 2001 was a collection of PDF files. That version is still available. However, the structure (multiple files) and the format (PDF) result in a poor user experience on an ebook reader or other mobile device. This version has been thoroughly cleaned of artifacts and condensed into something which can easily be converted into an ebook-friendly format. You can read this version online at GitHub, or download any of the EPUB or Mobi releases. You can clone the repository and generate your own version with pandoc if necessary.
    Downloads: 3 This Week
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  • 8
    P2P BoookShare

    P2P BoookShare

    Intuitive Flutter app facilitating easy book borrowing

    A user-friendly Flutter app for college students to share and borrow books on campus.
    Downloads: 3 This Week
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  • 9
    Kindle Mate(KMate)

    Kindle Mate(KMate)

    Kindle clippings and Kindle Vocabulary Builder manager

    KMate is the ultimate reading companion for Kindle users — and the all-new, cross-platform successor to Kindle Mate, the classic Kindle notes manager trusted by readers worldwide for over a decade. It is the only Kindle assistant that unifies cross-device import, cloud sync, vocabulary & dictionary management, flexible export, reading analytics, and AI-powered definitions — all in one app. ## KMate 3 for Windows latest (Store version)## https://apps.microsoft.com/detail/9pn7t09k4kv7 ******************************************************************************* ## KMate 3 for macOS latest ## https://apps.apple.com/app/kmate-mate-for-readers/id6757381177 ******************************************************************************* What's new: - Added Reading Mode and Global Reading Data Statistics - All-new Vocabulary Online & AI Dictionary - Book Sorting and Grouping for Notes / Vocabulary - Reading & Learning Status Display & Management
    Downloads: 24 This Week
    Last Update:
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  • The AI workplace management platform Icon
    The AI workplace management platform

    Plan smart spaces, connect teams, manage assets, and get insights with the leading AI-powered operating system for the built world.

    By combining AI workflows, predictive intelligence, and automated insights, OfficeSpace gives leaders a complete view of how their spaces are used and how people work. Facilities, IT, HR, and Real Estate teams use OfficeSpace to optimize space utilization, enhance employee experience, and reduce portfolio costs with precision.
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  • 10
    calibre
    calibre - Ebook management
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    Downloads: 7 This Week
    Last Update:
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  • 11
    OpenComic

    OpenComic

    Comic and Manga reader

    Comic and Manga reader, written with Node.js and using Electron.
    Downloads: 38 This Week
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  • 12
    Openbooks

    Openbooks

    Search and Download eBooks

    Openbooks allows you to download ebooks from irc.irchighway quickly and easily. For a complete list of features use the --help flags on all subcommands. For example openbooks cli --help or openbooks cli download --help. There are two modes; Server or CLI. In CLI mode you interact and download books through a terminal interface. In server mode the application runs as a web application that you can visit in your browser. OpenBooks server doesn't have to be hosted at the root of your webserver. The basepath value allows you to host it behind a reverse proxy. The base path value must have opening and closing forward slashes (default "/").
    Downloads: 1 This Week
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  • 13
    Trance App
    Klientská aplikace pro databázi elektronických knih Trance. Pomáhá prohlížet a vyhledat knihy a otevřít stahovací odkaz na externí úložiště. Dostupná pro Android, Windows a Linux.
    Downloads: 8 This Week
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  • 14
    pReader
    pReader is an eBook Reader for WebOS (Palm Pre/Pixi and HP TouchPad) that is currently supporting plain-text, PalmDOC ePub, and various other eBook formats (without DRM). It is written entirely in JavaScript and reads the files directly from the media partition. A beta version that uses a native C++ backend is also available.
    Downloads: 2 This Week
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  • 15
    SpeeD ReaD ("Speedy Read-y")

    SpeeD ReaD ("Speedy Read-y")

    SpeeD ReaD is a little program to help you read faster.

    SpeeD ReaD helps you to read faster and more efficiently. By minimizing subvocalization and saccades, you can process and comprehend the text you read much faster than with normal reading. First, subvocalization is the natural tendency for all of us to "hear" the words in our brains as we read. Think of it as reading out loud inside your head. But our minds do not need us to sound out the words we read - even inside our heads - in order to understand them. The words can be processed in a fraction of the time it takes us to sound them out. SpeeD ReaD forces you to simply comprehend words by sight. Additionally, as we read blocks of text on a screen or in a book, our eyes tend to vacillate between rapid movements (saccades), as we move to the next word, and stops, as we focus on a word. By showing each word in the same area of the screen, SpeeD ReaD eliminates those unnecessary eye movements. Try SpeeD ReaD today and find out how quickly you can read.
    Downloads: 1 This Week
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  • 16
    Buka

    Buka

    EBook Management

    EBook Management Pdf Reader
    Downloads: 1 This Week
    Last Update:
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  • 17

    Librum

    A modern ebook reader and library manager

    Librum is an application designed to make reading enjoyable and straightforward for everyone. It's not just an e-book reader. With Librum, you can manage your own online library and access it from any device anytime, anywhere. It has features like note-taking, bookmarking, and highlighting, while offering customization to make it as personal as you want! Librum also provides free access to over 70,000 books and personal reading statistics while being free and completely open source.
    Downloads: 1 This Week
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  • 18

    Simplest pdf reader

    Html5 simple pdf reader

    A simple local pdf file reader in html page.
    Downloads: 1 This Week
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  • 19
    Book Shepherd helps to manage ebooks, articles, links and other electronic documents.
    Downloads: 0 This Week
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  • 20
    FolioReaderKit

    FolioReaderKit

    A Swift ePub reader and parser framework for iOS

    FolioReaderKit is an ePub reader and parser framework for iOS written in Swift. FolioReaderKit is available through CocoaPods and Carthage. Go to your storyboard file, choose or create the view controller that should present the epub reader. In the identity, the inspector set StoryboardFolioReaderContrainer as a class. Media Overlays (Sync text rendering with audio playback). TTS - Text to Speech Support, parse epub cover image, RTL Support. Vertical or/and Horizontal scrolling, share Custom Image Quotes NEW, supports multiple instances at same time, like parallel reading.
    Downloads: 0 This Week
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  • 21
    GGStar Book Reader

    GGStar Book Reader

    GG Star Books reader

    Download and read GG Star Books
    Downloads: 0 This Week
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  • 22
    Manage and read EBooks produced by Project Gutenberg.
    Downloads: 0 This Week
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  • 23
    Librum

    Librum

    The Librum client application

    A clean and powerful way to read and manage your e-books on any device. Create your own personalized online library that you can access from any device, anytime, anywhere. Librum automatically saves everything you need to the cloud. Focus on what actually matters, using a simple and straight forward interface. Librum works out of the box, everywhere and at any time. Organize your library the way you want it to be using Librum's organization features. Add your books to collections, tag them, and sort them in any way you want.
    Downloads: 0 This Week
    Last Update:
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  • 24
    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.
    Downloads: 0 This Week
    Last Update:
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  • 25
    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.
    Downloads: 0 This Week
    Last Update:
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