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ATnotes vs SumatraPDF

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

ATnotes icon
ATnotes
SumatraPDF icon
SumatraPDF

ATnotes vs SumatraPDF: The Verdict

⚡ Summary:

ATnotes: ATnotes is a free open-source note taking app for Windows. It has basic note editing features like rich text formatting, tagging, search, and organizing notes into notebooks. Useful for simple personal note taking and task management.

SumatraPDF: SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.

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 ATnotes SumatraPDF
Sugggest Score — —
Category Office & Productivity Office & Productivity
Pricing Open Source Open Source

Product Overview

ATnotes
ATnotes

Description: ATnotes is a free open-source note taking app for Windows. It has basic note editing features like rich text formatting, tagging, search, and organizing notes into notebooks. Useful for simple personal note taking and task management.

Type: software

Pricing: Open Source

SumatraPDF
SumatraPDF

Description: SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.

Type: software

Pricing: Open Source

Key Features Comparison

ATnotes
ATnotes Features
  • Basic note editing
  • Rich text formatting
  • Tagging notes
  • Searching notes
  • Organizing notes into notebooks
SumatraPDF
SumatraPDF Features
  • Lightweight and fast PDF reader
  • Supports many document formats like PDF, ePub, MOBI, XPS, DjVu, CHM, CBZ, CBR
  • Customizable with themes, keyboard shortcuts
  • Tabbed document interface
  • Supports annotations and highlighting
  • Continuous scrolling
  • Supports reflowable text
  • Supports digital signatures
  • Supports comics book formats
  • Supports eBooks
  • Supports syncing open documents across devices

Pros & Cons Analysis

ATnotes
ATnotes

Pros

  • Free and open source
  • Simple interface
  • Cross-platform

Cons

  • Limited features compared to Evernote, OneNote etc
  • No mobile app
  • No collaboration features
SumatraPDF
SumatraPDF

Pros

  • Lightweight and fast
  • Supports many document formats
  • Free and open source
  • Customizable
  • Good support for comics and eBooks

Cons

  • Limited annotation features compared to advanced PDF editors
  • Lacks OCR capabilities
  • No cloud storage integration
  • No mobile apps

Pricing Comparison

ATnotes
ATnotes
  • Open Source
SumatraPDF
SumatraPDF
  • Open Source

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Learn More About Each Product

ATnotes
ATnotes
Reviews, pricing & alternatives →
SumatraPDF
SumatraPDF
Reviews, pricing & alternatives →

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