Plotbot!

Scrivener is a word processor and project management tool created specifically for writers of long texts such as novels and research papers. It won't try to tell you how to write - it just makes all the tools you have scattered around your desk available in one application.

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.

Trelby is simple, fast and elegantly laid out to make screenwriting simple. It is infinitely configurable.* Screenplay editor: Enforces correct script format and pagination, auto-completion, and spell checking.* Multiplatform : Behaves identically on all platforms, generating the exact same output.* Choice of view: Multiple views, including draft view, WYSIWYG mode, and fullscreen to suit your writing style.* Name database: Character name database containing over 200,000 names from various countries.* Reporting: Scene/location/character/dialogue reports.* Compare: Ability to compare scripts, so you know what changed between versions.* Import: Formatted text, Final Draft XML (.fdx).* Export: PDF, formatted text, HTML, RTF, Final Draft XML (.fdx).* PDF: Built-in, highly configurable PDF generator. Supports embedding your chosen font.* Free software: Licensed under the GPL, Trelby welcomes developers and screenwriters to contribute in making it more useful. »

Organon is a plugin for LibreOffice and OpenOffice.

Based on the Firefox engine, supports standards, visual storyboarding, production scheduling, publication & international languages MUI support. Free tutorials, videos & wiki are available from the site. There is a very helpful community too.

A new screenwriting experience brought to you by Amazon Studios. Write your screenplay and focus on the story with features like auto-formatting, offline writing, and import/export in your favorite file formats. Keep your scripts safe with unlimited, secure storage in the cloud. When you’re finished writing your screenplays, you can submit them directly to Amazon Studios for consideration!

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.

Use your creative energy to focus on the content; let Final Draft take care of the style. Final Draft is the number-one selling word processor specifically designed for writing movie scripts, television episodics and stage plays.

Adobe® Story software lets you outline your ideas, write scripts quickly with automatic formatting, and collaborate online. Plan and schedule fast-paced video projects, organize production with reports, and leverage script metadata in post-production

Montage is a screenwriting software that allows everyday people to take those movie ideas they have and make them a reality. Melding the theory that a simple user interface, combined with powerful and intuitive features, provide the best writing experience, Montage makes it easy to create, edit, and manage screenplays on your Mac. From the ability to import and export Final Draft documents, to using custom, pre-formatted templates for film, TV, and theater, Montage guides both the first time screenwriter or the seasoned veteran, from start to finish. Also available in German, Italian, Spanish, and French. »

Fade In Professional Screenwriting Software is a complete application for writing motion picture screenplays, including tools for outlining, organizing, and navigating, plus extensive screenplay formatting and robust tools for managing rewrites and revisions.

Official website: http://page2stage.sourceforge.net/

Story Outlining & Script Formatting Software for Mac & PC

Scriptware scriptwriting software, for writing scripts faster and easier than ever. Screenplay software for script writers. The screenwriting software choice of screenwriters on over 70 TV shows and dozens of movies!