Calligra Words VS Microsoft Word

LibreOffice - Writer - Open-source cross-platform word processor.

Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.

AbiWord - AbiWord is a free software word processor.

Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.

Atlantis Word Processor - Atlantis Word Processor enables users to create documents and reports and to publish e-books.

Wondershare PDFelement - All-in-one PDF editor