Pages
Google Docs
Adobe Acrobat DC
Wondershare PDFelement
Microsoft Word
Foxit PhantomPDF
Dropbox Paper
Conga Document Generation
Celtx
Scrivener
Final Draft
yWriter
Trelby
FocusWriter
HandBrake
StudioBinder
CeltxGoogle 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.