Scrivener!

bibisco is a free and open source software for writing novels. With bibisco you can organize chapters and scenes, manage revisions, export novel in pdf or rtf, and write with a fully featured text editor. You can create a novel structure, define premise, fabula, narrative strands and settings: geographic, temporal and social context. And, most of all, with bibisco you can know everything about your characters.

yWriter is a word processor which breaks your novel into chapters and scenes, helping you keep track of your work while leaving your mind free to create. It will not write your novel for you, suggest plot ideas or perform creative tasks of any kind. yWriter was designed by an author, not a salesman!

Write and organize your ideas in Gingko tree documents.

Manuskript is an open-source tool for writers, with outliner, character management, plot development, distraction-free editor, etc. OutlinerOrganize your thoughts and snippets in a hierarchical manner. Organize them as you wish, reorganize them on the go.

Ulysses is a text editor for creative writers. Used by bloggers, poets, students and published novelists all over the world, it offers an integrated environment to brainstorm, draft, revise and even submit text on a professional level.

Hemingway App makes your writing bold and clear.The Hemingway Editor for Mac and PC highlights common errors. Use it to catch wordy sentences, adverbs, passive voice, and dull, complicated words.

With Plume Creator, organize your writing projects ! Scenes, notes, characters,... Rich Text editing, full screen editing and multiple projects …

Organon is a plugin for LibreOffice and OpenOffice.

UV Outliner is a small and powerful single-pane outliner. It is intended for creating, organizing, and collecting information.

Quoll Writer's interface is focused on what matters, your words. Controls are where you would expect them to be. It employs a familiar tabbed interface to allow you to work on multiple chapters and assets at once.

Novlr is by writers, for writers. We are building Novlr to be as simple to use as possible. We want it to feel like there’s nothing there but your words. But don’t be fooled, there’s a lot of power in the background.

oStorybook is a free, open source novel-writing software for creative writers, novelists and authors which will help you to keep an overview of multiple plot-lines while writing texts.

An ultimate outlining software for story writers. It is aimed especially for screenwriters, but can be used as well as for outlining novels, tales and any kind of stories.

True Novelist provides a way for authors to write their novel online, organize their story, view statistics about their project and writing habits, set goals, keep track of related research, and more.