Calibre
Self-HostedPowerful open-source e-book management tool
Overview
Calibre is a comprehensive open-source e-book management solution that organizes, converts, and syncs digital libraries across devices. It auto-fetches metadata (covers, authors, summaries), supports over 100 e-book formats for conversion, includes a built-in reader with annotations, and offers a self-hosted server mode to access your library remotely. Ideal for large collections, it also lets you edit e-book content and share books via its web interface.
Key Features
- Auto-fetch metadata & covers for e-books
- 100+ format conversion support
- Self-hosted web server for remote access
- Built-in reader with annotation tools
- Cross-platform (Windows/macOS/Linux)
Frequently Asked Questions
? Is Calibre hard to install?
Calibre is easy to install as a desktop app with one-click installers for Windows, macOS, and Linux. For self-hosted server mode, enable it via preferences—basic setup only requires toggling the feature, though remote access needs port forwarding knowledge.
? Is it a good alternative to Adobe Digital Editions?
Yes—Calibre offers more features than Adobe Digital Editions, including robust format conversion, automatic metadata fetching, and self-hosted remote access. Unlike Adobe’s DRM-focused tool, Calibre prioritizes open formats and full library control.
? Is it completely free?
Calibre is 100% free and open-source (GPLv3 licensed). There are no paid tiers, subscriptions, or hidden costs—all features (including server mode) are available without charge.
Top Alternatives
Tool Info
Pros
- ⊕ 100% free & open-source
- ⊕ Comprehensive library organization
- ⊕ Remote access via self-hosted server
- ⊕ Wide format compatibility
Cons
- ⊖ Desktop UI can feel overwhelming for new users
- ⊖ Server mode requires basic network setup (port forwarding)
- ⊖ No native mobile app (relies on web interface)