Seikan vs Celtx
Celtx pioneered online screenwriting and has expanded into production management. Seikan offers the full pipeline — from script to call sheet — with every tool sharing a connected data model. Where Celtx focuses on the writing experience, Seikan connects your writing to your entire pre-production workflow.
| Feature | Seikan | Celtx |
|---|---|---|
| Writing & Script | ||
| Screenplay editor | ✓ | ✓ |
| Auto-formatting | ✓ | ✓ |
| Scene detection | ✓ | ✓ |
| Freewriting mode | ✓ | — |
| .fdx / .fountain import | ✓ | Partial |
| Real-time co-writing | ✓ | Add-on |
| Pre-Production | ||
| Shot list | ✓ | ✓ |
| Script breakdown | ✓ | ✓ |
| Inline breakdown tagging | ✓ | — |
| Storyboard | ✓ | ✓ |
| Moodboard | ✓ | — |
| Character profiles | ✓ | — |
| Production | ||
| Call sheet generator | ✓ | Add-on |
| Budget tracker | ✓ | — |
| Gear inventory | ✓ | — |
| Scheduling | — | Add-on |
| Collaboration & Export | ||
| Real-time collaboration | ✓ | Paid add-on |
| Team chat | ✓ | — |
| Connected data model | ✓ | — |
| PDF export (13+ formats) | ✓ | Limited |
| Free tier | ✓ | Limited |
Why teams choose Seikan
- Full production pipeline — breakdown, budget, call sheets, and gear included, not sold as add-ons
- Inline breakdown tagging directly in your screenplay
- Moodboard with infinite canvas and collaborative drawing
- Connected data model — changes propagate across all tools automatically
- Real-time collaboration included in Pro (not a separate paid add-on)
Celtx is a strong choice for screenwriting and has solid pre-production tools available as add-ons. Seikan includes the full production pipeline in one suite — breakdown, budget, call sheets, gear, and moodboard — with a connected data model where everything stays in sync.
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