UHF X11: X11 Display Server for Apple Vision Pro
Original: UHF X11: X11 Built for VisionOS and Apple Vision Pro
Why This Matters
Bridges classic Unix/X11 software ecosystem with modern spatial computing on Vision Pro, enabling legacy application compatibility.
UHF X11 transforms Apple Vision Pro into a full X11 display server, allowing users to run vintage X11 applications and connect external X clients through spatial windows in visionOS with native pixel rendering.
UHF X11 is a modern X11 implementation designed specifically for Apple Vision Pro and visionOS. The application enables users to execute classic X11 clients such as xterm, xclock, xlogo, xcalc, and twm in spatial windows within the Vision Pro's environment. Key features include rootless spatial windows where each X11 top-level window appears as an independent visionOS window positionable anywhere in user space. The system accepts external X11 client connections from trusted machines over standard TCP protocols using MIT-MAGIC-COOKIE-1 authentication. Visual presentation includes pixel-perfect rendering at native resolution with nearest-neighbor scaling, alongside optional 80s-inspired effects including CRT scanlines, phosphor masks, glow, and vignette presets. The application supports experimental indirect GLX for OpenGL 3D rendering over X11 connections, though compatibility varies. Users can import custom bitmap font directories from visionOS folders, with core X11 fonts included. External clients connect via standard DISPLAY environment variable configuration (VISOR.LOCAL:0). The software is distributed through acquisition mechanisms and carries a copyright notice from 2026 by developer Ian Finder.