When comparing SoftMaker FreeOffice vs Calibre, the Slant community recommends Calibre for most people. In the question“What are the best tools for creating EPUB books?” Calibre is ranked 1st while SoftMaker FreeOffice is ranked 15th. The most important reason people chose Calibre is:
Features include metadata editing and downloading, coverpage downloading., book tagging and categorization, webpage-to-ebook converter for popular websites, etc. Lots of plugins available to extend functionality.
Specs
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Pros
Pro Lightweight
It is extremely lightweight compared to Libreoffice.
Pro Excellent Office compatibility
Can open and save DOCX, XLSX and PPTX files.
Pro Free
Pro Touchscreen support
Pro Powerful book management software, very customizable and scriptable
Features include metadata editing and downloading, coverpage downloading., book tagging and categorization, webpage-to-ebook converter for popular websites, etc. Lots of plugins available to extend functionality.
Pro Cross-platform
Calibre is available for Linux, OS X, and Windows, 32-bit or 64-bit.
Pro Open Source
Pro Portable
Calibre has an optional portable build that can be stored on external media along with the users library. It can then be opened from the external media on any windows device.
Cons
Con Need to register an account before use
Con Average, non-power users might find the interface somewhat daunting
The interface, while functional is not the most attractive or intuitive which may put some people off and discourage their use.