Looking for Calibre alternatives? Here are the best free software options with similar features and functionality.
Powerful and easy-to-use e-book manager for organizing, converting, and reading digital books
Complete office suite alternative to Microsoft Office
Fast and feature-rich PDF viewer and editor with powerful annotation tools
Lightweight PDF and eBook reader
Free, open source note-taking and to-do app with end-to-end encryption
The visual work management tool that empowers teams to collaborate and get more done
All-in-one workspace for notes, tasks, wikis, and databases
Organize your work and life with powerful task management
Work management platform for organizing tasks and strategic initiatives
Flexible Handwritten Notes & PDF Annotation Tool