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Google Sidewiki vs Trilium Notes

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

Google Sidewiki icon
Google Sidewiki
Trilium Notes icon
Trilium Notes

Google Sidewiki vs Trilium Notes: The Verdict

⚡ Summary:

Google Sidewiki: Google Sidewiki was a social annotation tool that allowed users to make comments and annotations alongside web pages from 2009 to 2011. It enabled collaborative annotation functionality for information on websites.

Trilium Notes: Trilium Notes is an open-source hierarchical note taking application focused on building large personal knowledge bases. It has a tree-structured notes system allowing easy organization of ideas and supports features like linking between notes, embedding media, tagging, encryption, etc.

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 Google Sidewiki Trilium Notes
Sugggest Score — —
Category Online Services Office & Productivity
Pricing — Open Source

Product Overview

Google Sidewiki
Google Sidewiki

Description: Google Sidewiki was a social annotation tool that allowed users to make comments and annotations alongside web pages from 2009 to 2011. It enabled collaborative annotation functionality for information on websites.

Type: software

Trilium Notes
Trilium Notes

Description: Trilium Notes is an open-source hierarchical note taking application focused on building large personal knowledge bases. It has a tree-structured notes system allowing easy organization of ideas and supports features like linking between notes, embedding media, tagging, encryption, etc.

Type: software

Pricing: Open Source

Key Features Comparison

Google Sidewiki
Google Sidewiki Features
  • Allowed users to make comments/annotations alongside web pages
  • Enabled collaborative annotations on websites
  • Browser extension let users view annotations on web pages
  • Users could vote on annotations
  • Annotations were public and visible to all Sidewiki users
Trilium Notes
Trilium Notes Features
  • Hierarchical tree-structured notes
  • Rich text notes with markdown support
  • Note linking and embedding
  • Media attachments
  • Tagging and full-text search
  • Note encryption
  • Sync through Git and WebDAV

Pros & Cons Analysis

Google Sidewiki
Google Sidewiki

Pros

  • Enabled crowdsourced annotations
  • Let users add context/info to existing web pages
  • Made the web more interactive and collaborative

Cons

  • Lacked moderation, so low-quality/spammy annotations were common
  • Annotations were distracting and cluttered pages
  • Many websites blocked Sidewiki annotations
  • Slow adoption and not enough active users
Trilium Notes
Trilium Notes

Pros

  • Open source and self-hosted
  • Very flexible organization
  • Strong linking and embedding
  • Good for large personal knowledge bases

Cons

  • No mobile apps
  • Steep learning curve
  • Formatting options limited compared to Evernote/OneNote

Pricing Comparison

Google Sidewiki
Google Sidewiki
  • Not listed
Trilium Notes
Trilium Notes
  • Open Source

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Learn More About Each Product

Google Sidewiki
Google Sidewiki
Reviews, pricing & alternatives →
Trilium Notes
Trilium Notes
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