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Story development tools for storytellers

Lay the groundwork for a great script with index cards, storyboards, and script insights.

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University of the Arts - London
Red Hat
Split Verse

Grow your great idea into a great script with these story development tools


Index Cards

Organize your ideas, balance your script, and start planning for pre-production. Easily convert index cards into scenes in your script as you plan out your story.


Bring your script to life with the Storyboard. The script editor connects directly to the storyboard to give you flexibility in storytelling.

Script Insights

Celtx analyzes your script as you work. Set goals, track your performance and when your creative mind is at its most productive.


Celtx Spotlight

Brian Levant

The index cards make it easy to organize and outline scenes, and the intuitiveness of the script editors enables even new users to easily translate their thoughts into words. An added and unique feature of Celtx is the ability for two or more writers to collaborate simultaneously, regardless of their location and even via mobile devices, which has been an invaluable tool...”
Brian LevantHollywood writer, director, and producer

A Production Studio for the Connected Creative


Foster team collaboration with features like script-anchored feedback. Use @mentions to notify others and keep an open dialogue until the best idea wins.

Presence Awareness

Collaborating in Celtx is easy. When more than one co-writer has a script open for editing, presence-awareness shows you their cursor position and highlights text changes in real-time.

Sharing and Permissions

Give creative license to other Celtx users to read, edit, or comment on your script.

Shareable Links

Share your project for feedback and approvals with read-only access links.

Get started today with Celtx’s all-in-one studio for writing, story development, pre-production, and production.

Used by writers in 180+ countries

Over 5 million verified Celtx accounts

Used in 25,000+ educational institutions

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Celtx Screenplay App

Never miss a stroke of genius with the Celtx Screenplay app, your mobile studio for wherever inspiration takes you. Download the app.