LiveDemo – open-source tool for creating interactive product demos
Self-hosted interactive demos, but the repo contains only deployment scripts, not app code.

GitHub-linked video generation with real-time chat editing, but Synthesia and D-ID already exist.
Indie developers, SaaS founders, side project builders needing promo videos
Synthesia · D-ID · Runway
Self-hosted interactive demos, but the repo contains only deployment scripts, not app code.
Bundles the entire CE.SDK knowledge base into portable agent skills and even ships a builder agent that can scaffold complete editor projects across a dozen frameworks — useful if you're actually building embeddable editors. It's a practical, no-network way to get guided code generation and automated scaffolding, but its value is tightly tied to CE.SDK and the Claude/Vercel skills ecosystem, so it's niche rather than broadly disruptive.
Playwright scripts become demo videos with local TTS, no API keys needed.
macOS-native screen recorder with timeline editing, but Loom/ScreenFlow dominate this space.
Edit JSON config instead of re-recording when your demo has a typo or misclick.
Orchestrates script-to-video pipeline, but competitors like Runway and D-ID exist.