Manuskript - Open-source tool for writers.

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...

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.

Novelist - A portable writing assistant for novelists.