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Cool Reader vs ONLYOFFICE

Professional comparison and analysis to help you choose the right software solution for your needs.

Cool Reader icon
Cool Reader
ONLYOFFICE icon
ONLYOFFICE

Cool Reader vs ONLYOFFICE: The Verdict

⚡ Summary:

Cool Reader : Cool Reader is an open-source eBook reader available for Windows, Linux, Android and other platforms. It supports a variety of eBook formats including EPUB, FB2, DOC and more. Key features include customizable themes/skins, text-to-speech, bookmarks and annotations.

ONLYOFFICE: ONLYOFFICE is an open-source office suite that includes online document editors for text documents, spreadsheets, and presentations. It can be integrated into various platforms to provide editing capabilities.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Cool Reader ONLYOFFICE
Sugggest Score — —
Category News & Books Office & Productivity
Pricing Open Source Open Source

Product Overview

Cool Reader
Cool Reader

Description: Cool Reader is an open-source eBook reader available for Windows, Linux, Android and other platforms. It supports a variety of eBook formats including EPUB, FB2, DOC and more. Key features include customizable themes/skins, text-to-speech, bookmarks and annotations.

Type: software

Pricing: Open Source

ONLYOFFICE
ONLYOFFICE

Description: ONLYOFFICE is an open-source office suite that includes online document editors for text documents, spreadsheets, and presentations. It can be integrated into various platforms to provide editing capabilities.

Type: software

Pricing: Open Source

Key Features Comparison

Cool Reader
Cool Reader Features
  • Supports wide variety of eBook formats including EPUB, FB2, DOC, TXT, RTF, HTML, CHM, PDB, PDF
  • Customizable themes/skins
  • Adjustable text size, fonts, colors, margins
  • Text-to-speech with multiple voices
  • Bookmarks and annotations
  • Dictionary lookup
  • Supports reading in over 40 languages
  • Can open books from cloud storage services like Dropbox
  • Available on Windows, Linux, Android, and other platforms
ONLYOFFICE
ONLYOFFICE Features
  • Word processor
  • Spreadsheet editor
  • Presentation editor
  • Collaborative editing
  • Version history
  • Third-party integration
  • Plugins and extensions
  • Mobile apps

Pros & Cons Analysis

Cool Reader
Cool Reader
Pros
  • Free and open source
  • Lightweight and fast
  • Highly customizable reading experience
  • Supports many formats
  • Available on multiple platforms
Cons
  • Limited formatting options compared to some other eBook readers
  • Less features than some commercial eBook readers
  • PDF support could be better
  • No native support for ePub 3
ONLYOFFICE
ONLYOFFICE
Pros
  • Free and open source
  • Good compatibility with Microsoft Office formats
  • Real-time co-editing
  • Available on multiple platforms
  • Customizable and extensible
Cons
  • Limited features compared to Microsoft Office
  • Limited template options
  • Can be slow with large documents
  • Limited charts and analysis tools in spreadsheet editor

Pricing Comparison

Cool Reader
Cool Reader
  • Open Source
ONLYOFFICE
ONLYOFFICE
  • Open Source

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Learn More About Each Product

Cool Reader
Cool Reader
Reviews, pricing & alternatives →
ONLYOFFICE
ONLYOFFICE
Reviews, pricing & alternatives →

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