Feature | Polar | calibre |
---|---|---|
Capture web pages | ||
Google Chrome Extensions | ||
Cloud sync | ||
Document annotations | ||
Document Repository | ||
Learn with Flashcards | ||
Offline Reading | ||
PDF annotation | ||
Export to PDF | ||
Save web page for offline use | ||
Sync with Anki | ||
Tags | ||
Technical paper notes | ||
Text Highlighting | ||
Web-Based | ||
Website annotation | ||
Batch conversion | ||
Built-in e-Book converter | ||
Built-in viewer | ||
Customizable | ||
Share notes | ||
Works Offline | ||
Photo notes | ||
Sync on many devices | ||
Text formatting | ||
Sync between devices | ||
Adapted article view | ||
Bookmarks | ||
Mobile friendly | ||
MarkDown support | ||
Search by tags | ||
Protected by Password | ||
Browser integration | ||
Cross-references | ||
Export to LaTeX | ||
Knowledge Management | ||
Bookmark organization | ||
Full text search | ||
Multiple languages | ||
File Tagging | ||
File-organization | ||
File Searching | ||
File management | ||
Annotations and Flashcard Review | ||
Ebook cloud sync | ||
Sync across Devices | ||
Indexed search | ||
Clean design | ||
Firefox Extensions | ||
IFTTT integration | ||
Auto update | ||
Bibliography generator | ||
Book organization | ||
Built-in editor | ||
Built-in Adobe Flash Player | ||
Built-in PDF converter | ||
Custom cover image | ||
DRM Free | ||
Email notifications | ||
Facebook integration | ||
File-sync | ||
Handwritten Notes | ||
Integrated PDF Viewer | ||
Library management | ||
Book manager | ||
Live Push Notifications | ||
Live updating | ||
Portable | ||
Read fb2 format | ||
Rss to Kindle | ||
SMS Reminders | ||
Supports All Ebooks Format | ||
Sync with e-reader | ||
Update notifier |