YourQuote - YourQuote is an interactive mobile app that helps you to write stories, quotes, screenplays, poems, and books.
Scrivener - Scrivener is a content-generation tool for composing and structuring documents.
JotterPad - JotterPad Writer for Android — Turn your thoughts into text. Go about your creative writing without distractions, write to your hearts content...
Final Draft - Use your creative energy to focus on the content; let Final Draft take care of the style.
Inkspired - Inkspired is one of the largest platforms that help professional and new writers/readers to discover, publish, and write creative stories or books.
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.