KOReader VS Ubooquity

Compare KOReader VS Ubooquity and see what are their differences

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KOReader

An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on...

Ubooquity

Ubooquity is a free, lightweight and easy-to-use home server for your comics and ebooks.

Landing page //
2022-03-18

Landing page //
2021-10-10

KOReader

Website: koreader.rocks
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Ubooquity

Website: vaemendis.net
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KOReader features and specs

Open Source
KOReader is an open-source project, allowing users to freely modify and contribute to its development. This fosters a community-driven approach and often leads to rapid improvements and feature additions.
Multi-Platform Support
KOReader supports a wide range of devices including Kindle, Kobo, PocketBook, and Android devices, making it a versatile option for users across different e-readers.
Customizability
The application offers extensive customization options for font styles, page layout, and other reading parameters, enabling users to tailor their reading experience to their preferences.
File Format Compatibility
KOReader supports a variety of eBook formats such as EPUB, PDF, MOBI, and DJVU, providing flexibility and reducing the need for format conversion.
Active Development
The app benefits from continual updates and community support, ensuring that bugs are frequently addressed and new features are regularly introduced.

Possible disadvantages of KOReader

Complex Installation
For non-technical users, installing KOReader can be challenging, especially on some e-reader devices that require specific steps or jailbreaking.
User Interface
The user interface can be less intuitive compared to some proprietary e-reader software, which might be a hurdle for some users accustomed to more polished UIs.
Battery Consumption
KOReader is known to consume more battery compared to native reading applications on some devices, which can be a disadvantage for users needing long battery life.
Performance Issues
Users may experience occasional performance issues, such as slower page turns or lag, particularly with large or complex documents.
Limited Official Support
As an open-source project, KOReader lacks formal customer support. Users rely on community forums and documentation for troubleshooting and support.

Ubooquity features and specs

User-Friendly Interface
Ubooquity offers a simple and intuitive user interface that makes it easy for users to navigate and access their eBook and comic collections without a steep learning curve.
Cross-Platform Support
This software can be used across various operating systems including Windows, macOS, and Linux, providing flexibility and accessibility for users across different platforms.
Remote Access
Ubooquity allows users to access their library remotely via a web browser, making it convenient to read eBooks and comics from any location with internet access.
Free and Open Source
Ubooquity is free to use and open-source, allowing users to benefit from community-driven improvements and potentially customize the software to fit their needs.
Built-in OPDS Server
It includes an OPDS server, which helps users to browse, search, and download books or comics directly using compatible reading apps, streamlining the reading experience.

Possible disadvantages of Ubooquity

Limited Advanced Features
Compared to some other media server solutions, Ubooquity may lack certain advanced features and capabilities, which could be a drawback for power users looking for more functionality.
Manual Setup and Configuration
Setting up and configuring Ubooquity can require manual intervention and some technical knowledge, possibly complicating the process for users who are not technologically savvy.
No Active Development
Development and updates for Ubooquity have slowed down, potentially leading to concerns over future support, compatibility issues, and missing out on new features.
Mobile App Dependency
While Ubooquity provides remote access, it relies on third-party apps for mobile device usage, which may not always offer the same functionality or user experience as an integrated app would.
Limited Customization Options
The software offers limited options for customization, making it potentially less appealing for users wanting to tailor the interface or functionality extensively to suit personal preferences.

Analysis of KOReader

Overall verdict

KOReader is generally considered a good e-reader application.

Why this product is good

KOReader is praised for its versatility and customization options. It supports a wide range of e-book formats, works on multiple devices (including Kindle, Kobo, and PocketBook), and offers features like dictionary support, text-to-speech, and extensive settings for font, layout, and reading preferences.

Recommended for

Users who need cross-platform compatibility across different e-reading devices.
Readers who require support for various file formats like EPUB, MOBI, PDF, DJVU, and more.
Those who appreciate extensive customization options in their reading experience.
Tech-savvy users who enjoy open-source projects and community-driven development.

KOReader videos

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Kobo Aura One KOReader PDF Review

Ubooquity videos

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Ubooquity Comic Book Linux Server | For The Record

Category Popularity

0-100% (relative to KOReader and Ubooquity)

Ubooquity

eBook Reader

62 62%

eBook Reader

38% 38

Ebooks

61 61%

Ebooks

39% 39

eBook Manager

58 58%

eBook Manager

42% 42

Tool

100 100%

Tool

0% 0

User comments

Share your experience with using KOReader and Ubooquity. For example, how are they different and which one is better?

Social recommendations and mentions

Based on our record, KOReader should be more popular than Ubooquity. It has been mentiond 105 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

KOReader mentions (105)

Mozilla shutdown Pocket on July 8, 2025
I use KOReader [1] on my Kobo. It supports Wallabag [2]. Wallabag offers both hosted [3] and self-hosted options. There's also a standalone kobo client for Wallabag [4]. In addition, Wallabag also supports direct import from Pocket. [1] https://koreader.rocks/ [2] https://wallabag.org/ [3] https://www.wallabag.it/en [4] https://gitlab.com/anarcat/wallabako. - Source: Hacker News / 18 days ago
All Kindles can now be jailbroken
Highlighting the very popular app enabled by this, KOReader: https://koreader.rocks/. - Source: Hacker News / 4 months ago
ElevenReader by ElevenLabs
You can jailbreak you kindle [1] and install KOReader[2] and this will allow you to do this science fiction. [1] https://kindlemodding.org/jailbreaking/WinterBreak/ [2] https://koreader.rocks/. - Source: Hacker News / 4 months ago
Pagination widows, or, Why I'm embarrassed about my eBook
Have you tired KOreader[0]? It supports multiple ebook formats, including epub and cbz. You'll need to jailbreak[1] your Kindle though. [0] http://koreader.rocks/. - Source: Hacker News / 7 months ago
PineNote Community Edition
I love my old Kindle Touch. The #1 thing that keeps me using it is a community-maintained e-reader software you can run on it that makes it much more usable without Amazon's support: http://koreader.rocks/ My #1 priority for new hardware nowadays is making sure it's not dependent on OEM software. Nothing sucks more than buying a device for a selected purpose, and then not being able to use it fully because some... - Source: Hacker News / 8 months ago

Ubooquity mentions (26)

Calibre – New in Calibre 7.0
Maybe have a look at Kavita or Ubooquity (possibly Komga, but that's more for comics) https://www.kavitareader.com/ https://vaemendis.net/ubooquity/ https://komga.org/. - Source: Hacker News / over 1 year ago
Are there any iOS comic readers that let you "stream" cbz and cbr files?
Another option might be Ubooquity – it’s simpler than Komga, but you can start it as a desktop application on your regular computer. Could be a good way to get your feet wet :). Source: about 2 years ago
Selfhosted book library with app to read these books
I use Ubooquity to host my books and KyBook 3 to read from the OPDS feed. Source: over 2 years ago
Self Hosted Server For Multiple Types Media
I Use httrack.com software to download my websites. I am aware of the following software: Ubooquity, TrueNas, Kavita, Plex, MediaMonkey, Jellyfin and MusicBrainzPicard. Source: over 2 years ago
Docker Calibre-Web alternative
Ubooquity - Good for comics, manga, and ebooks. The interface is a little bit clunkier to manage but once it is setup it is stable. Source: over 2 years ago