Open-source alternatives to Docker Calibre Web

BookReader is a mobile e-book reader application designed for reading digital novels in EPUB, PDF, and TXT formats. It functions as a digital library manager for organizing, indexing, and searching collections of electronic books using titles and tags. The application features a reading interface with three-dimensional page-flip animations to simulate the feel of physical books. It also includes a wireless synchronization system for transferring digital book files between devices over a local network. The software provides tools for customizing the reading experience, including adjustable th

Librum is a cross-platform digital ebook reader and library manager designed to render multiple book formats. It functions as an integrated reading assistant and a system for organizing digital libraries across multiple devices. The project distinguishes itself by providing a self-hosted backend option, allowing users to maintain full control over their book data and metadata via a private server. It also integrates a language model assistant to provide text summarization, explanations, and translations of specific passages while reading. The application covers comprehensive library manageme

Talebook is a self-hosted personal ebook library server that allows you to import, organize, and host your ebook collection on the web. It provides a built-in browser-based EPUB reader so you can read books directly without downloading them, and it can push selected ebooks to a Kindle device via email for offline reading. The library catalog is exposed over OPDS, enabling mobile reading apps to browse and download titles. Talebook supports multiple user accounts with social login integration, making it suitable for shared library management among friends or family. It also includes a passcode

Reader3 is a self-hosted ebook reader designed for LLM-assisted reading and digital library management. It provides a private web interface for viewing and managing digital book files stored on a local machine. The system integrates a reading flow with large language models to analyze, summarize, and discuss digital books. It supports collaborative document analysis by reading long-form texts in a structured manner to extract information for AI processing. The project includes capabilities for managing a local library by indexing files in a specific directory and serving content through a st

Komga is a self-hosted digital comics and eBook server that organizes, serves, and streams CBZ, CBR, PDF, and EPUB files through a web interface. Built as a Java Spring Boot application with SQLite-based metadata storage, it provides multi-user access controls with individual reading progress tracking and supports the OPDS protocol for compatibility with third-party reader applications. The server distinguishes itself through comprehensive authentication options, including OAuth2 and OpenID Connect support with automatic account creation and email verification, alongside traditional cookie an

This project is a Telegram API client and media archiving system designed to programmatically retrieve chat histories and export media. It functions as a download manager and message forwarder, allowing users to back up photos, videos, and documents from Telegram chats into structured local archives. The system distinguishes itself through advanced content filtering and forwarding capabilities. It can monitor chats for new messages, apply custom regular expressions to filter media by size or date, and automatically forward content between chats. This includes the ability to export protected c

Reader is a digital content reader and browser-based document viewer. It functions as a digital library manager and content aggregator that collects articles and documents from various online sources into a single interface. The project utilizes a JSON-driven approach to organize and display hierarchies of digital documents. It incorporates a REST-based aggregation model to fetch reading materials and metadata from remote servers for a unified viewing experience. The application provides client-side rendering for digital texts and manages personal collections through a digital library system

Hydra is a headless identity server that functions as a certified OAuth2 and OpenID Connect provider. It is designed as an authentication engine that manages authorization handshakes and token lifecycles while remaining decoupled from the user interface. The project distinguishes itself through a headless architecture, allowing external management of login and consent flows. It provides specialized capabilities for dynamic client registration, JSON Web Token issuance, and a system for rotating encryption secrets without service downtime. The system covers a broad range of identity operations

Calibre-Web-Automated is a self-hosted ebook library server that watches file system folders for new ebook files, automatically converts them to a target format, enriches their metadata from online sources, and inserts them into a Calibre-managed library. It provides a web interface for browsing, reading in-browser, searching full text, and managing collections, while also supporting user authentication through multiple protocols including OAuth 2.0, OpenID Connect, LDAP, magic links, and reverse proxy headers. The server integrates directly with Kobo e-reader devices, synchronizing books, co

Foliate is an EPUB e-book reader and multi-format document viewer designed for reading and managing digital books. It functions as a digital library manager that indexes local files and tracks reading progress across a personal collection. The application supports complex layout handling, including right-to-left text and vertical writing with automatic hyphenation. It provides a text-to-speech interface that converts document content into spoken audio using a system speech dispatcher. The tool includes capabilities for digital text annotation, allowing users to create highlights and notes. I

Reader is a Win32 text reader and EPUB document viewer for Windows. It functions as an auto-scrolling text viewer and a web novel downloader that renders digital books and plain text using various character encodings. The application includes a text-based content filter to remove advertisements and irrelevant text from web sources using regular expressions. It provides hands-free reading capabilities through automated page-turning and scrolling modes governed by custom time intervals. The software manages digital book organization through reading progress tracking, bookmark management, and t

Vendure is a headless commerce framework built with TypeScript and NestJS for managing direct-to-consumer and business-to-business sales channels. It provides a scalable backend for coordinating product catalogs, orders, and payments through a typed and introspectable GraphQL API. The project is distinguished by a modular, plugin-based extension model that allows for the addition of custom entities, pricing rules, and business logic. This extensibility enables the coordination of omnichannel sales and enterprise order orchestration from a single central core. The framework covers broad capab

o-lib is a digital library client for browsing, searching, and downloading publications from remote server subscriptions. It serves as a desktop application that combines remote resource access with a local content organizer to track reading progress and manage favorite titles. The system manages connections to multiple server lines via manual imports or structured subscription lists and uses concurrent speed testing to verify latency and throughput. It includes a multi-threaded download manager that utilizes byte-range offsets to resume interrupted transfers. The application provides tools

epub.js is a JavaScript library for parsing and displaying EPUB files within a web browser. It functions as a digital publication layout engine and rendering library that enables the creation of browser-based eBook readers with support for both paginated spreads and continuous scrolling. The project provides a specialized framework for interactive eBook annotation and precise location tracking. It uses Content Fragment Identifiers to represent text positions as unique strings, allowing for stable bookmarking, text highlighting, and note-taking. The library covers a broad range of capabilitie

Readest is a cross-platform digital book reader and library management system designed to render multi-format ebook files across different devices. It provides a consistent interface for viewing digital content while coordinating reading progress, bookmarks, and notes through synchronization services. The application includes specialized tools for technical and academic reading, such as code syntax highlighting, a virtual split-screen viewport for comparing documents, and full-text search for rapid information retrieval. It further extends the reading experience with integrated dictionary loo

This project is a technical text renderer designed to display complex mathematical notation and syntax-highlighted code within digital document formats. It functions as a MathML technical renderer and a system for producing static site generated documentation. The project creates digital textbooks available as both HTML5 digital books and standardized EPUB3 eBooks. It transforms source materials into pre-rendered HTML and EPUB files, ensuring the content is compatible with modern web browsers and electronic book readers. The rendering surface utilizes a responsive layout with viewport adapta

This project is a curated ebook directory and digital library designed for self-directed learning. It functions as a version-controlled knowledge base that provides a collection of downloadable academic textbooks and educational resources across multiple disciplines. The library is built as a markdown-based system where book metadata and download links are stored in flat files. These files are managed through a git-driven content pipeline and rendered as a static site resource index for fast access and simple hosting. The system utilizes a directory-based categorization model to organize mat

This project is a modular e-commerce platform built on Ruby on Rails, designed to serve as a comprehensive engine for managing online retail operations. It provides the foundational infrastructure to handle complex product catalogs, customer order lifecycles, and global payment processing within a unified system. The platform distinguishes itself through a headless, API-first architecture that decouples backend commerce logic from custom frontend storefronts. It supports multi-tenant environments, allowing for the management of multiple independent retail storefronts or marketplaces from a si

Vue Storefront is a composable commerce platform designed to decouple the presentation layer from backend systems. By providing a headless frontend framework, it enables developers to build high-performance, mobile-first digital storefronts that remain independent of specific commerce engines, payment providers, or content management systems. The platform distinguishes itself through a modular architecture that uses standardized integration adapters to aggregate data from disparate services into a unified layer. This approach allows businesses to modernize legacy infrastructure or manage comp

LibreraReader is a multi-format e-book reader and digital library manager designed for mobile and desktop devices. It functions as a customizable document renderer and a text-to-speech document player that converts written text into spoken audio via a configurable speech engine and integrated media player. The project distinguishes itself through a high degree of visual and functional customization, including the ability to inject custom CSS for styling overrides and the use of pluggable rendering engines to balance speed and stability. It includes specialized navigation tools such as a verti

Keystone is a GraphQL headless content management system and Node.js backend framework. It functions as a schema-driven data manager that automatically generates a GraphQL API and a React administrative dashboard based on a central data model configuration. The system uses an adapter-based database abstraction to decouple core logic from storage layers and a storage-provider abstraction for managing media assets via local or cloud drivers. It distinguishes itself through a component-based field rendering system and a hook-based middleware pipeline for data validation and automation. The fram

RavenDB is a multi-model NoSQL document database designed for high-performance, ACID-compliant data storage. It persists structured information as schema-flexible JSON documents and utilizes a unit-of-work session pattern to track entity changes and batch modifications into atomic transactions. The platform is built on a distributed architecture that supports horizontal scaling through sharding and ensures high availability via multi-node, master-to-master cluster replication. The database distinguishes itself through a self-optimizing query engine that automatically creates and maintains ind

Idurar is an integrated system combining Customer Relationship Management and Enterprise Resource Planning. It functions as a headless business API that generates secure REST endpoints and administrative panels from configuration files to connect business logic with external applications. The platform supports multi-tenant SaaS management, isolating data and configurations for multiple companies or branches within a single installation. It is designed for international business accounting, featuring a multi-currency financial engine that processes transactions and manages regional tax rules a

Apostrophe is a full-stack JavaScript content management framework built on Node.js. It functions as both a traditional CMS, integrating a backend data store with frontend template rendering, and a headless CMS that exposes content via JSON APIs for decoupled frameworks and mobile applications. The system features an in-context content editor that allows users to modify text and media directly on live pages. It also includes a multi-site management dashboard for coordinating and controlling several distinct websites from a single installation. The framework provides schema-driven content mod

Yoopta-Editor is a headless framework for building customizable block-based rich text editors. It utilizes a JSON-based document engine to manage editor state and provides a WYSIWYG interface for creating structured documents. The system separates core document logic from the visual layer, allowing for complete customization of the user interface. The framework is designed for real-time collaborative editing, featuring a synchronization engine with conflict resolution and remote cursor presence tracking. It offers a highly extensible plugin system that allows developers to define new content

Saleor is a composable e-commerce platform and global order orchestrator designed as an extensible commerce backend. It provides a GraphQL headless commerce API that separates core business logic and data management from the presentation layer, allowing for the management of products, orders, and customers without a predefined storefront. The platform is built for multi-channel store management, enabling the independent control of pricing, currencies, and stock across various sales channels and warehouses. It differentiates itself through a modular architecture that integrates custom business

This project is a digital magazine archiver and downloader designed to retrieve historical magazine editions from online sources to build a local digital library. It functions as a tool for downloading and organizing publications to ensure long-term offline preservation. The utility manages ebook collections by storing issues in PDF, EPUB, and MOBI formats to maintain compatibility across different reading devices. It uses a date-based directory hierarchy and local file system indexing to categorize electronic publications by publication date and issue number. The system covers digital publi

Xray is a collaborative text editor and distributed workspace manager that utilizes conflict-free replicated data types to synchronize real-time edits and directory structures across peers. It functions as both an Electron-based desktop application and a headless editor server that manages workspaces and file systems remotely for connected clients. The project distinguishes itself by integrating fine-grained version control tracking, recording keystroke-level changes and uncommitted edits between Git commits. It employs a decentralized synchronization model for working copies and uses operati

Shopizer is a Java-based e-commerce platform designed for managing digital storefronts. It provides a centralized headless backend that coordinates product catalogs, shopping carts, and order processing workflows. The system is built as a containerized application ready for deployment and scaling within Kubernetes clusters on cloud infrastructure. It utilizes a headless architecture to decouple business logic from the presentation layer via a RESTful interface. The platform covers commerce management through inventory tracking, merchant account coordination, and order fulfillment workflows.

s5cmd is a command line interface for high-performance data transfers and management tasks across S3 compatible storage services. It functions as a parallel data transfer tool and bucket synchronization utility, designed to accelerate the uploading and downloading of large volumes of files using concurrent workers. The tool acts as a batch command processor capable of executing thousands of object management operations in parallel from command files or piped streams. It also serves as an S3 Select query client, allowing the execution of SQL expressions against stored JSON records to retrieve