Laper

Most screenwriting tools force a choice: you get proper formatting or you get collaboration, rarely both at a professional standard. Laper, built by Laper Inc., targets that gap — the vendor page describes it as an AI assistant for screenwriters that takes formatting off the table entirely, covering industry-standard conventions across US, UK, and French formats, while supporting simultaneous multi-writer editing in a shared environment. The core workflow is draft-in, feedback-out: you write, the AI surfaces structural notes, pacing observations, and character arc analysis, and you decide what to act on.

The differentiating claim is the multi-agent AI architecture the vendor uses to simulate diverse writers’ room perspectives on a script. Rather than a single model giving one note, the platform is described as surfacing multiple angles on narrative decisions — closer to a structured script critique than an autocomplete engine. The vendor explicitly positions this as guidance that supports human creativity rather than replacing it, which shapes what the tool is and is not useful for.

Laper fits a professional screenwriter or a small writers’ room that wants AI structural feedback embedded in the writing environment, not bolted on afterward. Pre-production planning with storyboarding and visual asset management is listed as a use case, which extends the tool’s scope past the script itself. However, the platform has no API, no self-hosted option, and is not open-source — teams that need to connect script data to a broader production pipeline, or who operate in environments requiring on-premise deployment, will find hard architectural limits before they find workarounds. The page also confirms the platform is built on Loro CRDT for collaborative conflict resolution, which is the technical underpinning for real-time multi-editor support.