Web-based, cross-platform
- Inkwell
- First-class
- Arc Studio Pro
- First-class
Cloud-native screenwriting, compared to a screenwriting IDE.
Arc Studio Pro earned attention for a polished, web-first screenwriting experience — fast collaboration, a modern interface, and a workflow that feels closer to how teams write today than legacy desktop tools. Inkwell shares that cloud-native DNA but adds structured version control, semantic diffs, and agentic AI skills on top of the document model.
Where Arc Studio Pro is strongest
Where the IDE model changes the work
Version control, structured changes, and reviewable AI
Named save points and scene-aware diffs — see what changed between table read and rewrite, not just that something changed.
A side-by-side look at where each tool stands today. Some Inkwell features are in active development — see the roadmap for current status.
Both support live co-writing; Inkwell layers save points and draft lines underneath.
Inkwell is Fountain-native; Arc focuses on its own structured editor experience.
Arc keeps revision history; Inkwell adds named, content-addressable save points you control.
Arc compares revisions; Inkwell diffs the structured document, not just text.
Arc offers AI assistance; Inkwell runs reviewable skill passes that edit the draft in place.
Inkwell's breakdown reports and revision-colour tracking are live on Pro and above, with printed A-pages still maturing; Arc focuses on script revision comparison rather than structured draft-line versioning.
Arc writes offline and syncs changes back through its cloud; it is not local-first. Inkwell is also cloud-first today, with a desktop app in development to bring offline writing into the same versioned project.
| Capability | Inkwell | Arc Studio Pro |
|---|---|---|
| Web-based, cross-platform | First-class | First-class |
| Real-time collaborationBoth support live co-writing; Inkwell layers save points and draft lines underneath. | First-class | First-class |
| Modern cloud-native UX | First-class | First-class |
| Fountain nativeInkwell is Fountain-native; Arc focuses on its own structured editor experience. | First-class | Partial or limited |
| Version control with draft lines | First-class | Not available |
| Named save points (immutable snapshots)Arc keeps revision history; Inkwell adds named, content-addressable save points you control. | First-class | Partial or limited |
| Semantic change tracking (scene/dialogue-level diffs)Arc compares revisions; Inkwell diffs the structured document, not just text. | First-class | Partial or limited |
| Agentic AI skill passesArc offers AI assistance; Inkwell runs reviewable skill passes that edit the draft in place. | First-class | Partial or limited |
| Inline AI edit (Cmd+K) and command palette | First-class | Not available |
| Production workflows (locked scripts, revision colours, A-pages)Inkwell's breakdown reports and revision-colour tracking are live on Pro and above, with printed A-pages still maturing; Arc focuses on script revision comparison rather than structured draft-line versioning. | Partial or limited | Partial or limited |
| FDX import / export | First-class | First-class |
| Offline / local-first editingArc writes offline and syncs changes back through its cloud; it is not local-first. Inkwell is also cloud-first today, with a desktop app in development to bring offline writing into the same versioned project. | Partial or limited | Partial or limited |
Feature and pricing details link to the first-party pages used for verification.
You want a polished cloud-native editor with low switching friction, strong real-time collaboration, and a familiar page-first workflow — without rebuilding how your room thinks about versions.
Your team needs named save points, draft lines, semantic diffs, and AI skill passes on structured screenplay data — plus WGA production tooling when the script locks.
The Free plan includes the full editor and AI skill passes.