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3CX vs Penbook

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

3CX icon
3CX
Penbook icon
Penbook

3CX vs Penbook: The Verdict

⚡ Summary:

3CX: 3CX is an open-source IP PBX software solution that works with popular SIP phone systems. It offers unified communications features like auto attendants, call routing, voicemail, video conferencing, and more.

Penbook: Penbook is a free and open-source note taking app designed for handwritten notes. It allows users to write notes naturally with a stylus, with features like pressure sensitivity, palm rejection, and customizable pens and paper. Useful for taking quick handwritten notes on a tablet.

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 3CX Penbook
Sugggest Score — —
Category Business & Commerce Office & Productivity
Pricing Open Source Open Source

Product Overview

3CX
3CX

Description: 3CX is an open-source IP PBX software solution that works with popular SIP phone systems. It offers unified communications features like auto attendants, call routing, voicemail, video conferencing, and more.

Type: software

Pricing: Open Source

Penbook
Penbook

Description: Penbook is a free and open-source note taking app designed for handwritten notes. It allows users to write notes naturally with a stylus, with features like pressure sensitivity, palm rejection, and customizable pens and paper. Useful for taking quick handwritten notes on a tablet.

Type: software

Pricing: Open Source

Key Features Comparison

3CX
3CX Features
  • VoIP PBX
  • Auto Attendant
  • Call Recording
  • Call Reporting
  • IVR
  • Voicemail
  • Video Conferencing
  • Instant Messaging
  • Presence
  • CRM Integration
Penbook
Penbook Features
  • Pressure sensitivity for natural writing experience
  • Palm rejection to avoid accidental touches
  • Customizable pens and paper styles
  • Support for stylus input
  • Handwriting recognition
  • Note organization with notebooks and tags
  • Share notes as images

Pros & Cons Analysis

3CX
3CX

Pros

  • Open source
  • Easy to use interface
  • Supports popular SIP phones
  • Has free edition
  • Good value for money

Cons

  • Limited mobile apps
  • Steep learning curve initially
  • Complex pricing structure
  • Requires dedicated hardware/server
Penbook
Penbook

Pros

  • Free and open source
  • Designed specifically for handwritten notes
  • Natural writing experience
  • Flexible organization with notebooks and tags
  • Cross-platform availability

Cons

  • Limited formatting options compared to word processors
  • No collaboration features
  • Handwriting recognition can be inaccurate
  • No cloud sync - notes only stored locally

Pricing Comparison

3CX
3CX
  • Open Source
Penbook
Penbook
  • Open Source

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Learn More About Each Product

3CX
3CX
Reviews, pricing & alternatives →
Penbook
Penbook
Reviews, pricing & alternatives →

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