Open Source calibre Alternatives
The best open source alternative to calibre is MuPDF. If that doesn't suit you, our users have ranked more than 100 alternatives to calibre and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to calibre are Foliate, Librera Reader, Document Viewer and Cool Reader .
calibre alternatives are mainly eBook Readers but may also be eBook Libraries or PDF Readers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of calibre.- Free • Open Source
- Windows
- Linux
- Android
- iPhone
- iPad
- F-Droid
- Xfce
MuPDF is a highly versatile, customizable PDF and XPS interpreter solution that can be used across a wide range of applications as a PDF renderer, viewer, or toolkit.
A simple and modern eBook viewer.
- Freemium • Open Source
- Android
- Android Tablet
- F-Droid
Librera Reader is a highly customizable and feature-rich application for reading books in PDF, EPUB, MOBI, DjVu, FB2, TXT, RTF, AZW, AZW3, HTML, CBZ, CBR formats on Android devices.
Document Viewer is a highly customizable document viewer for Android, fork of the last GPL version of EBookDroid .
- Free • Open Source
- Linux
- Android
- Android Tablet
Cool Reader is fast and small cross-platform XML/CSS based eBook reader for desktops and handheld devices. Understands a number of text document formats, suppurt OPDS (in new ui-opengl version).
Cool Reader vs calibre opinions
Not management system, only reader.
- Free • Open Source
- Linux
- Android
- Kobo
- PocketBook Reader
- Kindle Fire
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.
No screenshots yetRead the books you love without having to worry about different format complexities like epub, pdf, mobi, cbr, etc.
Bookworm vs calibre opinions
sedetiThat's just a reader, nothing else
Focused on reading, not library management. Can't convert between formats.
- Free • Open Source
- Self-Hosted
Calibre Web is a web app providing a clean interface for browsing, reading and downloading eBooks using an existing Calibre database.
- Free • Open Source
- Mac
- Windows
- Linux
Thorium Reader is a free, open source multi-language EPUB reader for Windows 10, MacOS and Linux. It's privacy aware and highly accessible for visually impaired and dyslexic people.
A modern eBook reader for epub, pdf, mobi, azw3 and txt, supporting Windows, macOS, Linux and Web.
Koodo Reader vs calibre opinions
RemovedUserI use the web-based platform and it's just very good. Super intuitive and minimalistic but with great functionalities and customization. And it's FOSS.