dr.aft
dr.aft is an AI-powered screenwriting editor purpose-built for writers who want clean, production-ready scripts without worrying about formatting. It natively supports the .fountain screenplay format, ensuring your script structure (slug lines, dialogue blocks, scene spacing, page breaks) remains intact while you write. Inline, context-aware AI suggestions help you craft scenes, dialogue, and narrative flow, all within the editing interface, without ever breaking format rules. It also offers “custom style steering” so you can subtly guide the AI’s tone and structure according to your preferred style, plus a distraction-free composition mode to help you focus on writing. For those who prefer using their own AI models, dr.aft supports a “Bring Your Own Key (BYOK)” option, letting you connect your own API key for flexible AI integration under your control. The result is a streamlined workflow that blends human creativity with AI assistance.
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CanonDraft
CanonDraft is browser-based screenwriting software for developing film and television scripts. Its editor formats scenes, action, dialogue and transitions, while the connected desk organizes script scenes as index cards on act-based cork boards with characters, locations and research clippings. The Notebook tracks written scenes beside an idea beat board; outlines can use three-act, Save the Cat, hero’s journey, film-with-interval or TV-episode structures. A project bible collects cast and places, and research clippings retain cited sources. An optional AI writers’ room discusses the script and maps scene-by-scene tension; it does not change pages unless accepted. Users can import Fountain or plain text and export scripts as PDF, Fountain or Final Draft files; outlines can be exported as PDF or Word. Free accounts support up to three scripts; Pro adds unlimited scripts and monthly AI image allowances.
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Trelby
A free, multiplatform, feature-rich screenwriting program! Trelby is simple, fast and elegantly laid out to make screenwriting simple. It is infinitely configurable. Trelby is free software, that you can contribute to. 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: Screenplay formatted text, Final Draft XML (.fdx), Celtx (.celtx), Fountain (.fountain), Adobe Story (.astx) and Fade In Pro (.fadein). Export: PDF, formatted text, HTML, RTF, Final Draft XML (.fdx) and Fountain (.fountain).
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ScriptLix
ScriptLix gives screenwriters free coverage on a screenplay in about twenty seconds. Paste a scene or upload a draft (PDF, FDX, Fountain) and get a 1 to 100 score, what's working, and the first thing to fix. No account needed.
Then rewrite in Studio, a free screenplay editor in the browser. It formats as you type, builds an outline from your scenes, works offline, and exports page-accurate PDF and FDX. Script Buddy, an AI helper, sits one keystroke away for notes on a scene or a line. Rescore after every draft and see whether the change helped.
Also included: 100+ free screenwriting tools (format checker, FDX to PDF, word count, name generators, logline and structure templates), a new Scene of the Day, and a $29 deep coverage report when you want a full read. Your script never trains a model.
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