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Okular vs ZenTao

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

Okular icon
Okular
ZenTao icon
ZenTao

Okular vs ZenTao: The Verdict

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Okular ZenTao
Sugggest Score
Category Office & Productivity Development
Pricing Free Open Source

Product Overview

Okular
Okular

Description: Okular is a versatile document viewer software for KDE. It supports viewing PDFs, EPUBs, ODT, and other document formats. Okular allows annotating, highlighting, commenting on documents as well as filling forms.

Type: software

Pricing: Free

ZenTao
ZenTao

Description: ZenTao is an open-source, self-hosted project management software. It allows teams to plan projects and sprints, track tasks and issues, manage documents, conduct code reviews, track time and productivity, and generate reports. ZenTao integrates with Git and various CI tools.

Type: software

Pricing: Open Source

Key Features Comparison

Okular
Okular Features
  • Supports viewing PDF, PostScript, DjVu, CHM, XPS, ePub and other formats
  • Allows annotating, highlighting and adding comments to PDFs
  • Has different view modes like single page, facing, overview grid
  • Supports tabs for opening multiple documents
  • Has presentation mode for slideshows
  • Can fill interactive PDF forms
  • Allows saving filled forms as PDF or text
  • Has search functionality to find text in documents
  • Can encrypt PDF files
  • Has document information and metadata viewer
  • Supports table of contents navigation
  • Has different reflow modes for reading ePubs
  • Can print documents to system printer
ZenTao
ZenTao Features
  • Project management
  • Task management
  • Bug tracking
  • Time tracking
  • Agile boards
  • Code review
  • Document management
  • Reporting and analytics

Pros & Cons Analysis

Okular
Okular
Pros
  • Free and open source
  • Clean and intuitive interface
  • Good performance with large PDFs
  • Lots of annotation and markup tools
  • Supports many document formats
  • Available on Linux, Windows, macOS
Cons
  • Limited format support compared to some alternatives
  • Annotation features may be limited for some users
  • No cloud storage integration
  • Less features than paid alternatives
ZenTao
ZenTao
Pros
  • Open source and self-hosted
  • Integrates with Git, Slack, Jenkins etc
  • Customizable workflows
  • Scalable for large teams
  • Free and easy to get started
Cons
  • Steep learning curve
  • Not as user friendly as other PM tools
  • Limited native mobile apps
  • Can be resource intensive to host yourself

Pricing Comparison

Okular
Okular
  • Free
ZenTao
ZenTao
  • Open Source

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