Bookworm

At a glance

• Editor score
  7.3 / 10
• Pricing
  Free plan
• Best for
  Open-source Linux readers with local libraries
• Free plan
  Yes
• Paid from
  Free
• Annotation tools
  Yes
• Facts checked
  22 Sep 2026

• Where it wins

  • Supports EPUB, PDF, MOBI, FB2, CBR, and CBZ
  • Combines metadata editing, sorting, search, bookmarks, and annotations
  • Offers light, sepia, and dark profiles with detailed display controls

• Where it doesn't

  • Available only on Linux
  • No stated synchronization between reading environments
  • Focused on local libraries rather than connected ebook ecosystems

Our verdict on Bookworm

Bookworm is an open-source desktop ebook reader for Elementary OS and other Linux distributions. It suits readers who keep books in local folders and want one application for common ebook and comic formats. Support covers EPUB, PDF, MOBI, FB2, CBR, and CBZ, while grid and list views provide two ways to browse a collection. Its GPL-3.0 license also makes it a clear fit for readers who prefer open-source software.

Library organization is a central strength. Bookworm can load books automatically from multiple folders, then provides metadata editing, sorting, and search for maintaining a more usable collection. Inside a book, readers get bookmarks, annotations, table-of-contents navigation, and in-book text search. These tools give the application more depth than a basic file opener, particularly for people managing a varied personal library. The focus remains on reading and local organization rather than a broader content service or connected ecosystem.

Reading customization is similarly well covered. Light, sepia, and dark reading profiles can be paired with controls for font, zoom, margins, and line width, making it possible to adjust the display for different books and preferences. Installation can be handled through Linux packaging options, or the project can be built from source. Bookworm is a strong choice for Linux users seeking a free, open-source reader with broad format support and useful library tools. Readers who require access beyond Linux or a synchronized reading experience should choose a different type of ebook application.

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Bookworm pricing

Bookworm fact sheet

Alternatives to Bookworm

• ReadestA cross-platform ebook reader for broad format support and detailed annotations.9.4
• BookFusionA flexible cloud library for mixed-format readers who want offline access and sync.9.2
• PocketBook ReaderA format-rich free reader for mobile users who need Adobe DRM and reading-position sync.9.0

See all Bookworm alternatives →

Featured on iTechGuides

Bookworm is listed in our Ebook Reader Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update