Microsoft Word VS Celtx

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.

Scrivener - Scrivener is a content-generation tool for composing and structuring documents.

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.

Final Draft - Use your creative energy to focus on the content; let Final Draft take care of the style.

Wondershare PDFelement - All-in-one PDF editor

yWriter - Free writing software designed by the author of the Hal Spacejock and Hal Junior series. yWriter6 helps you write a book by organising chapters, scenes, characters and locations in an easy-to-use interface.