How to choose the best screenwriting software: an honest guide

The best screenwriting software is the one that formats a script accurately, exchanges files cleanly with the people you work with and suits how you write — alone or with a partner, on one computer or many, with or without an internet connection. Formatting and file interchange are the non-negotiables; collaboration, outlining, AI and price decide between the tools that pass.

This guide is written by the team behind Scenaloom, so read it knowing where we stand. We have tried to make the criteria useful whichever tool you choose, and we say plainly below where Scenaloom is not the right fit.

What does screenwriting software do?

Screenwriting software is a word processor built around screenplay format. It knows the difference between a scene heading, action, a character cue and dialogue, applies each element's margins as you type, and paginates the script the way readers expect — including (MORE) and (CONT'D) when speech crosses a page. Most tools also add outlining, character and scene lists, revisions and export.

Well-known options include Final Draft (whose native file format is .fdx), Fade In, WriterDuet, Arc Studio, Celtx, Highland, Trelby and a range of editors built on Fountain, an open plain-text screenplay format. They differ in platform, price, collaboration model and philosophy; we do not rank them here, and you should check each one's current terms yourself.

The criteria that matter

1. Formatting accuracy and pagination

A script that looks wrong gets read with less patience. Check that the software uses 12-point Courier or a Courier variant at ten characters per inch, standard margins and about 55 lines per page, and that it handles page breaks properly: headings never stranded at the bottom of a page, speeches split with (MORE) and (CONT'D), transitions not opening a page. The page you see while writing should be the page in the PDF. The screenplay format guide lists the rules to check against.

2. File interchange: FDX, Fountain and PDF

You will exchange files with producers, co-writers, contests and production software. At minimum, look for import and export of Final Draft (.fdx), Fountain and PDF. Test a round trip: export a script, import it again and confirm that elements, bold, italic and underline and the page count survive. Plain-text Fountain is also a good long-term archive format, because any text editor can open it.

3. Collaboration

If you write with a partner, decide whether you need live co-editing (both people typing in the same draft at once) or just shared files. Then look at the supporting tools: comments on specific lines, roles that separate editors from readers, version history you can restore, and share links for notes from people who should not edit.

4. Platform and offline needs

Desktop applications work offline and keep files on your disk; browser-based tools work on any computer with a current browser, including Chromebooks, and keep drafts in sync. If you regularly write on planes or without reliable internet, offline support is a hard requirement — weigh it before anything else.

5. Outlining and structure tools

Some writers outline on index cards; others never outline at all. If you do, check whether the outline, beat board or scene cards are connected to the draft or are a separate document you must keep in sync by hand.

6. AI features and data policy

If a tool includes AI, find out what it can touch. Can it change your script without asking? Can you choose exactly which text it reads? Is there a history of what it changed? And read the data policy: what happens to your pages, who can access them and whether you can turn AI off.

7. Price and free tiers

Pricing models range from one-time licenses to subscriptions to free and open-source programs. For free tiers, read the limits — number of projects, length of a script, export formats, watermarks — and check what happens to your work if you stop paying.

8. Production export

If the script is going into production, you may need scene lists, locked scene numbers, revision marks, shot lists or breakdown sheets. Not every writer needs these, but changing tools in the middle of prep is painful.

Questions to ask before you commit

• Can I export my whole script to FDX, Fountain and PDF on the plan I would actually use?
• Does an imported script keep its page count, or does it reflow?
• Can I write without an internet connection, and does that matter to me?
• Will my co-writer and I edit at the same time, or take turns?
• Does the AI propose changes or make them, and can I limit what it reads?
• What exactly is limited on the free plan?
• If the company disappeared tomorrow, how would I get my scripts out?

What is the best free screenwriting software?

The best free screenwriting software is the one whose free tier still lets you finish and export a full script in standard format. Free options include open-source desktop programs, Fountain editors paired with a converter, and free plans of commercial tools. Compare the limits on script length, projects and export before you start a long draft, so you are not forced to switch mid-script.

Where Scenaloom fits

Scenaloom is online screenwriting software for people who want to write in a browser and work closely with others. It fits well if:

• You want to write on any computer — Mac, Windows, Linux or Chromebook — in current Chrome, Safari, Edge or Firefox, without installing anything.
• You co-write in real time, with live presence, comments with @mentions, roles and version history you can restore.
• You want structure linked to the draft: the outline, beats board, scene board and character pages are read from the script rather than kept as copies.
• You want AI that works on a scope you pick and proposes changes rather than making them; applying a change is a separate step recorded in version history.
• You plan to go further toward production with storyboards, shot lists, CSV scene and casting sheets, and generated images.

It imports Final Draft, Fountain and PDF scripts, and exports PDF, Final Draft (.fdx), Fountain, Word, plain text and Markdown, so your work is never locked in. See the full list in the import and export docs.

Where Scenaloom does not fit

• You need to write offline. Scenaloom has no offline mode and no desktop app; it needs a connection.
• You want a long track record. Scenaloom is a new product, and some production workflows that established tools support may not be here yet.
• You only ever write alone, never outline and want the smallest possible tool. A plain Fountain editor may suit you better.
• You need a full-length script on a free plan: Scenaloom's free plan limits script editing to 400 lines per script and two screenplay projects, which suits short scripts, not a feature.

Write it in Scenaloom

The quickest way to judge any screenwriting software is to write a few real pages in it and export them. Scenaloom's free plan needs no card and includes collaboration, so you can write a short script or import a few scenes, compare the pages with your PDF and try a round trip to FDX before paying for full-length work. Compare plans on the pricing page or start writing.