LibreOffice is the best free office suite around, and as such has been adopted by all major Linux distributions. Although LibreOffice is already packed with features, it can be extended by using specific add-ons, called extensions.
The main LibreOffice extensions website is extensions.libreoffice.org. Extensions are tools that can be added or removed independently from the main installation, and may add new functionality or make existing functionality easier to use.
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