Scriptware!

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. »

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.

A powerful writing environment for novelists and screenwriters

Plotbot is free screenwriting software. You can write your screenplay with as many or a few people as you want--right from your browser. We handle the formatting so you can concentrate on writing!

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. »

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

Story Outlining & Script Formatting Software for Mac & PC