6 Best Free Screenplay Writing Tools in 2026: An Honest Comparison

Choosing screenplay writing software can be difficult, especially when you’re starting out. You need a tool that formats your script correctly, helps you organize scenes, and lets you export your work without spending money before you’ve finished your first draft.

Fortunately, several screenwriting tools offer free plans or completely free applications. However, “free” means different things across platforms. Some limit the number of projects you can create, some restrict collaboration, and others add branding to exported scripts.

In this guide, we’ll compare six screenplay writing tools: AiraScripts, WriterDuet, Celtx, WriterSolo, Trelby, and Arc Studio.

We’ll examine their key features, free-plan limitations, strengths, and ideal users. We’ll also explore which tools are worth considering if you want to move beyond writing and into storyboarding and film preproduction.

Whether you’re a film student, a first-time screenwriter, an independent filmmaker, or an experienced writer looking for alternatives, this comparison will help you choose a tool that fits your workflow.

Free-plan features can change. Check each provider’s official website for current pricing and restrictions before choosing a tool.

Quick comparison: Best free screenplay writing tools

Tool	Best suited for	Free-plan highlights	Important consideration
AiraScripts	Screenwriting and AI-assisted filmmaking	3 free screenplay projects, no watermark, free PDF export	AI storyboarding, screenplay import, and real-time collaboration are paid features
WriterDuet	Collaborative screenwriting	3 projects, automatic saving, screenplay formatting	Real-time co-writing requires a paid plan
Celtx	Screenwriting and production planning	Online script editor, formatting, limited planning tools	Free plan is limited to 1 project and includes a Celtx footer
WriterSolo	Independent, offline-focused writing	Free screenwriting and file export options	Different workflow from cloud-based collaborative tools
Trelby	Open-source desktop screenwriting	Free desktop software, screenplay formatting and reports	Primarily designed for Windows and Linux
Arc Studio	Modern, structured screenwriting	Screenplay formatting and a streamlined writing interface	Free plan has project limits and watermarked PDF exports

No single tool is best for everyone. The right choice depends on whether you prioritize a generous free plan, offline access, collaboration, production planning, or AI-assisted visual development.

1. AiraScripts — Screenwriting with AI filmmaking features

AiraScripts is an online screenplay writing and AI filmmaking platform. Its screenplay editor helps writers create properly formatted scripts, while its additional tools connect script development with visual preproduction.

For writers who want more than a traditional screenplay editor, AiraScripts combines screenplay writing, AI Voice Writing, collaborative writing, screenplay import, and AI-powered storyboard generation across its free and paid offerings.

What is included in the free plan?

AiraScripts’ free plan includes:

• Up to three screenplay projects
• No time limit on those free projects
• No AiraScripts watermark on screenplay exports
• Free PDF export
• Automatic screenplay formatting
• Continued editing of free projects
• A five-minute AI Voice Writing trial

The screenplay editor supports standard screenplay elements such as scene headings, action, character names, dialogue, parentheticals, and transitions.

AI Voice Writing: Turn spoken ideas into screenplay text

AiraScripts offers AI Voice Writing for writers who prefer speaking their ideas instead of typing every line. The feature converts spoken ideas into formatted screenplay text.

The free plan includes a five-minute trial. Supported languages include English, Hindi, Tamil, Telugu, Malayalam, Kannada, Bengali, Marathi, Punjabi, and Gujarati.

This can be useful for writers who think aloud, dictate scene ideas, or want to experiment with developing screenplay drafts through voice.

Paid feature: Real-time screenplay collaboration

AiraScripts supports real-time collaboration, allowing up to four people to write in the same screenplay simultaneously.

This can be useful for writing partnerships, small writers’ rooms, and filmmaking teams that want to develop a script together rather than exchange separate document versions.

Because the feature is available on paid plans, writers should check the current subscription details before planning a collaborative project.

Paid feature: Import existing screenplays

Writers who already have a screenplay do not necessarily need to start from a blank document. AiraScripts supports screenplay import on its paid plans, giving users a way to bring existing scripts into the platform.

This can be particularly useful when moving an existing project into a new writing environment or exploring additional filmmaking tools without rebuilding the screenplay from scratch.

Check the current import-format support before migrating an important project.

Paid feature: AI Storyboard Generation

AiraScripts also offers AI Storyboard Generation, designed to help writers and filmmakers visualize screenplay scenes.

Rather than relying only on manually written image-generation prompts, users can work from their screenplay and use AI-assisted visual generation to explore how scenes might look.

This can help filmmakers develop visual ideas, communicate a director’s intentions, and prepare for preproduction.

Paid feature: Camera positioning, artist positioning, and visual blocking

A further capability is the ability to set camera and artist positions before generating storyboards.

This provides more control over visual staging than simply generating an image from a text prompt. Filmmakers can plan where the camera and artists should be positioned when developing a scene’s visual composition.

Camera placement and artist blocking are important parts of translating a written scene into a visual sequence. Being able to work with these decisions during storyboard development can help directors explore how a scene might be staged before filming.

This feature is part of AiraScripts’ paid offering, not the free screenplay plan.

Limitations to consider

AiraScripts’ free plan is limited to three screenplay projects. AI Voice Writing is available as a five-minute trial, while real-time collaboration, screenplay import, AI Storyboard Generation, and camera/artist positioning for storyboards require a paid plan.

Writers interested in the complete AI filmmaking workflow should review the current paid-plan features and limits before subscribing.

Who should consider AiraScripts?

AiraScripts is worth exploring if you want to write up to three screenplays for free, export PDFs without a watermark, experiment with voice-based screenplay writing, or connect screenplay development with AI-assisted visual planning.

It may be particularly relevant to filmmakers who want their writing, collaboration, and visual-preproduction workflows in one platform.

Explore: AiraScripts Free Screenplay Writing Software

2. WriterDuet — Best for collaborative screenwriting

WriterDuet is an established screenwriting platform known for its collaboration workflow. It supports online writing, cloud saving, backups, and tools for working with other writers.

Its free plan provides a useful starting point for writers who want professional screenplay formatting without an upfront subscription.

What is included in the free plan?

WriterDuet’s free plan includes:

• Up to three projects
• Industry-standard screenplay formatting
• Browser-based writing
• Automatic cloud saving
• External backup options
• Import and export support for common screenplay formats

WriterDuet advertises free screenplay writing without watermarks or page limits.

What makes it different?

WriterDuet is particularly appealing to writing partners and teams. Its collaboration tools help writers share scripts, review changes, and work together.

However, full real-time co-writing is a paid feature. Free users can share projects for reading and participate in certain collaborative workflows when working on an upgraded user’s project, subject to the plan’s permissions.

Limitations to consider

The free plan is limited to three projects. Writers who need unlimited projects, full real-time collaboration, or advanced revision and production features may need a paid subscription.

Who should consider WriterDuet?

WriterDuet is worth considering if you want reliable cloud backups, professional screenplay formatting, or a platform designed around collaborative writing.

Explore: WriterDuet Official Website

3. Celtx — Best for screenplay writing and production planning

Celtx is a cloud-based writing and preproduction platform. In addition to screenplay writing, it offers tools for organizing aspects of film and video production.

Its broader workflow can be useful when a script needs to progress toward planning, scheduling, and production.

What is included in the free plan?

Celtx’s free plan includes:

• An online script editor
• Automatic screenplay formatting
• Script import
• Cloud-based project access
• Real-time collaboration
• Limited access to selected planning tools

The available planning tools can include restricted use of features such as beat sheets, breakdowns, schedules, shot lists, and storyboards. Exact allowances depend on the current plan.

What makes it different?

Celtx goes beyond writing and formatting. Its ecosystem includes tools for script breakdowns, shot lists, schedules, and other production-planning tasks.

For filmmakers who want to connect screenplay development with production preparation, this broader toolset can be valuable.

Limitations to consider

Celtx’s free plan allows one project and includes a “Created using Celtx” footer on scripts. Some advanced production tools and customization options are restricted.

Check the current plan before relying on a particular planning feature for a project.

Who should consider Celtx?

Celtx is worth considering if you’re developing a screenplay alongside a production plan and want writing and planning tools in one platform.

Explore: Celtx Official Website

4. WriterSolo — Best for independent, offline-focused writing

WriterSolo is a screenwriting application associated with WriterDuet, but it offers a different writing experience. It is designed for writers who prefer an independent workflow rather than relying entirely on a cloud-based collaboration platform.

What makes it different?

WriterSolo provides screenplay formatting and file import/export capabilities. Its workflow suits writers who want to work independently and manage their scripts locally.

It supports formats used by other screenwriting applications, including Final Draft and Fountain, making it useful for writers moving between tools.

Limitations to consider

WriterSolo does not provide the same cloud-synchronized collaborative experience as WriterDuet. Writers who want live co-writing, automatic access across devices, and integrated team workflows should compare the two applications carefully.

Check the official website for current download options and operating-system compatibility.

Who should consider WriterSolo?

WriterSolo is worth considering if you want a free screenwriting workflow and prefer working independently rather than using a cloud-first collaborative platform.

Explore: WriterSolo / WriterDuet

5. Trelby — Best for free, open-source desktop screenwriting

Trelby is a free, open-source screenplay writing application. Unlike browser-based services, it focuses on a desktop writing workflow.

It is designed around the essentials of screenplay writing without a recurring subscription.

What does it offer?

Trelby’s feature set includes:

• Automatic screenplay formatting and pagination
• Character-name autocomplete
• Spell checking
• Script comparison
• Scene, location, and character reports
• Import support for screenplay formats
• PDF and other export options

Its open-source nature also makes the code available for inspection and community contributions.

What makes it different?

Trelby’s appeal is its combination of free access, useful reporting features, and a focused desktop environment. It can suit writers who want a dedicated screenplay editor without paying for a cloud subscription.

Limitations to consider

Trelby is primarily designed for Windows and Linux. Its desktop-focused workflow may be less convenient for writers who need browser access, cloud synchronization, or real-time collaboration.

Check the project’s current release and compatibility information before installing it.

Who should consider Trelby?

Trelby is worth considering if you want an open-source screenwriting program with no subscription cost and prefer working with local files.

Explore: Trelby Official Website

6. Arc Studio — Best for a modern, structured writing experience

Arc Studio is a screenwriting application that emphasizes a modern interface, organized writing workflows, and cloud-based access.

Its free plan allows writers to try the writing experience before committing to a paid subscription.

What does it offer?

Arc Studio’s free plan provides screenplay formatting and a streamlined writing interface. The platform also offers cloud synchronization and story-development features, with availability depending on the plan.

What makes it different?

Arc Studio focuses on a clean workspace and tools that support story development. Its interface may appeal to writers who prefer a modern, structured environment rather than a traditional desktop editor.

Limitations to consider

The free plan has a limit on the number of scripts, and PDF exports include a watermark. Some advanced outlining, application, and collaboration features are restricted to paid plans.

If you regularly share PDFs with producers, actors, or collaborators, the watermark may influence your decision.

Who should consider Arc Studio?

Arc Studio is worth exploring if interface design and a structured writing experience are important to you and you’re comfortable with its free-plan restrictions.

Explore: Arc Studio Official Website

Which free screenplay writing tool should you choose?

Start with the workflow you need rather than choosing based only on a ranking.

Your priority	Tools worth exploring
Three free screenplay projects and no watermark	AiraScripts or WriterDuet
AI Voice Writing	AiraScripts
Real-time collaboration with up to four writers	AiraScripts on a paid plan
Importing existing screenplays into AiraScripts	AiraScripts on a paid plan
AI storyboard generation from screenplay workflows	AiraScripts on a paid plan
Camera positioning and artist blocking for storyboards	AiraScripts on a paid plan
Collaborative screenwriting	WriterDuet or Celtx
Screenwriting with production-planning tools	Celtx
Independent, offline-focused writing	WriterSolo or Trelby
Open-source desktop software	Trelby
Modern interface and structured writing	Arc Studio

These are starting points, not absolute winners. Your experience will also depend on your operating system, preferred writing style, internet access, budget, and whether you work alone or with collaborators.

What should you look for in free screenplay writing software?

Before choosing a tool, consider these six factors.

1. Industry-standard screenplay formatting

A dedicated screenplay editor should handle scene headings, action, character cues, dialogue, parentheticals, and transitions. Automatic formatting allows you to focus on the story instead of manually adjusting margins and spacing.

2. Project limits

Some free plans allow one project, while others allow two or three. If you’re developing a feature, a short film, and a pilot simultaneously, the number of permitted projects matters.

3. PDF export and watermarks

Screenplays often need to be shared with actors, producers, competitions, and collaborators. Check whether free PDF export is available and whether the document includes a watermark or branded footer.

4. Cloud access versus offline writing

Browser-based tools make it easier to access a project from different devices. Desktop applications may be preferable if you want to work locally or write without an internet connection.

Consider backups as well. Make sure you understand where your scripts are saved and how to export copies of your work.

5. Collaboration and screenplay import

If you write with a partner, check whether the free plan supports real-time collaboration, comments, or shared reading links. If you already have a screenplay, verify whether the tool supports importing your existing file and preserving the formatting.

Both features can save time, but they are not always included in free plans.

6. AI and preproduction features

AI features can help with specific stages of filmmaking, but they are not interchangeable.

• AI Voice Writing can help turn spoken ideas into draft screenplay text.
• AI Storyboard Generation can help visualize scenes and explore shot ideas.
• Camera and artist positioning can help directors plan visual staging and blocking.
• Production-planning tools can help organize the practical work required to prepare a shoot.

Check whether these features are included in the free plan or require a paid subscription. For example, AiraScripts offers a five-minute AI Voice Writing trial, while AI Storyboard Generation, camera/artist positioning, screenplay import, and real-time collaboration are paid features.

Frequently asked questions

What is the best free screenplay writing software?

There is no single best option for every writer. AiraScripts and WriterDuet are worth comparing if you want three free projects. Celtx is useful for writing alongside production planning, WriterSolo and Trelby suit independent writing workflows, and Arc Studio offers a modern interface with a more limited free plan.

Is there completely free screenplay writing software?

Yes. Trelby is a free, open-source desktop application, while WriterSolo offers a free screenwriting workflow. Several browser-based services also have free plans, although their project limits and features differ.

Which free screenwriting software has no watermark?

AiraScripts and WriterDuet advertise screenplay exports without watermarks on their free plans. Arc Studio’s free plan includes a watermark on PDF exports, while Celtx states that free scripts include a Celtx footer. Check each provider’s current terms before exporting a script for professional use.

Which free screenplay writing tool allows multiple projects?

AiraScripts and WriterDuet allow up to three projects on their free plans. Arc Studio’s free plan has a two-script limit, while Celtx’s free plan allows one project. WriterSolo and Trelby have different workflows, so check their current features and file-management options.

Can I write a feature-length screenplay for free?

Yes, many free tools can be used to write a feature-length screenplay. WriterDuet states that its free plan has no page limit. AiraScripts offers three free screenplay projects without a time limit, while Celtx’s free script editor supports unlimited pages. Verify current restrictions before starting a long project.

Is WriterDuet better than Celtx?

It depends on your needs. WriterDuet is particularly appealing for collaborative writing, while Celtx offers a broader set of writing and production-planning tools. Their free plans differ in project limits, and their paid plans unlock additional features.

What is the difference between WriterDuet and WriterSolo?

WriterDuet is a cloud-based screenwriting platform with collaboration features. WriterSolo provides a more independent, offline-focused writing experience. Choose based on whether you value cloud collaboration or prefer working locally.

Can I use free screenplay writing software on a Mac?

Browser-based tools such as AiraScripts, WriterDuet, Celtx, and Arc Studio can be accessed on a compatible Mac browser. For desktop applications such as Trelby and WriterSolo, check the official download pages for current macOS support.

Does AiraScripts offer AI storyboard generation for free?

No. AiraScripts’ AI Storyboard Generation is a paid feature. The free plan provides up to three screenplay projects, unwatermarked PDF exports, and a five-minute trial of AI Voice Writing. Writers interested in AI-assisted visual planning should review the current paid-plan features and limits.

Does AiraScripts support real-time screenplay collaboration?

Yes. AiraScripts supports up to four people writing in the same screenplay simultaneously. This is a paid feature, so users should check the current subscription plans before starting a collaborative project.

Can I import an existing screenplay into AiraScripts?

Yes. AiraScripts offers screenplay import on paid plans. Check the current supported file formats before importing a screenplay from another application.

Can I control camera and artist positions when generating AI storyboards?

AiraScripts offers camera and artist positioning for storyboard generation, allowing filmmakers to plan visual staging and blocking. This capability is part of the paid offering rather than the free screenplay plan.

What is AI storyboard generation?

AI storyboard generation uses artificial intelligence to help turn screenplay material or scene descriptions into visual storyboard concepts. It can help filmmakers explore how a scene might be framed and communicate visual ideas during preproduction. The exact workflow and level of control depend on the tool.

Can AI write a screenplay for me?

AI tools can help develop ideas, generate outlines, or turn spoken ideas into draft screenplay text. Writers still need to shape the story, develop authentic characters, revise dialogue, and make creative decisions. AI is best treated as an assistant to the creative process rather than a replacement for the writer.

Final thoughts

The best free screenplay writing tool is the one that helps you finish your script without creating unnecessary obstacles.

WriterDuet is a strong option for collaborative writing. Celtx is worth considering if you want writing and production-planning tools together. WriterSolo and Trelby appeal to writers who prefer independent or offline-focused workflows, while Arc Studio offers a modern interface with a limited free plan.

AiraScripts provides three free screenplay projects, unwatermarked PDF export, and a short AI Voice Writing trial. Its paid features extend the workflow with screenplay import, real-time collaboration for up to four writers, AI Storyboard Generation, and camera/artist positioning for visual staging and blocking.

The right choice depends on what you need today and what you may need as your project develops. Try the tools that match your priorities, review their current plan restrictions, and choose the one that makes it easiest for you to keep writing.

If you want to try a browser-based screenplay editor with three free projects, you can start here:

Try AiraScripts Free — No Watermark, No Time Limit