OS Engine is a native macOS application makes your desktop feel alive without compromising performance. Whether you want subtle ambience or animated scenes, you can create, edit, and share in minutes. Customize infinitely by adding your own 2D HTML overlays with embedded CSS or 3D Threejs Overlays.
Features:
Dynamic Video Wallpapers
Cinematic loops
Custom HTML objects with live update animations
Auto-pause on fullscreen and battery
Custom HTML Overlays
Run HTML/CSS/JS safely above any wallpaper
Pointer-events safe, transparent background
Combine multiple elements and save versions
Web Wallpapers
Live dashboards, maps, or art in a sandboxed web view
Content JS enabled; background forced transparent
Editor
Design scenes with elements, keyframes, and presets
Versioning with quick load/rename
Inline apply to desktop
Automation
Switch scenes by app focus, time, or context
Pause on battery/fullscreen
Per-monitor assignments
Inline Updates
Get new builds directly in-app — no manual downloads
Signed builds, quick apply
AI-assisted HTML (Ollama)
Local LLM generation for overlays with optional screenshot context (gemma3)
Generate from natural language directly in the editor
Model autodiscovery; configurable base URL and default model
Output contract and positioning guardrails for perfect embedding
Multi-monitor Support
Independent wallpapers per display
Battery Friendly
Optimized renderers with smart pausing to save resources