ASUS DisplayWidget Center vs ddcctl

ASUS DisplayWidget Center is free software for managing and adjusting compatible ASUS monitors on Windows and macOS. It lets users change display modes, brightness, contrast and colour temperature. Productivity tools include eye-care controls, MultiFrame window layouts, PIP/PBP, KVM controls and ZenScreen auto rotation. App Tweaker can apply presets or custom profiles to selected apps, and users can assign keyboard shortcuts to monitor settings. OLED Care includes pixel cleaning, uniform brightness and timer reminders, though feature availability varies by monitor. Gaming tools such as AI Visual and GamePlus are limited to specific monitor models or series. The AI Assistant accepts text or voice input to adjust settings and answer ASUS display product FAQs, but requires internet access and an account login; use may be limited to maintain service quality. Display CLI provides programmatic display control, while AI Agent Skills let compatible agents change settings using natural-language requests. Supported systems are Windows 11 or later and macOS 12 Monterey or later. The software works only with select ASUS monitors.

ddcctl is a free GPLv3 open-source command-line utility for adjusting external monitor controls from the macOS shell. Its primary controls are brightness and contrast. Depending on monitor firmware, it may also switch input source, change built-in speaker volume or RGB colors, select color presets, and reset settings. The stated scope is macOS, Macintosh hardware, and DDC-controlled monitors. Installation is available through Homebrew, downloadable release binaries, or a source build; building requires Xcode and running make. Example scripts can be invoked by Alfred, ControlPlane, or Karabiner to switch presets. The project describes itself as a personal utility in maintenance mode and asks users to debug their own issues. Its maker says there is no time to triage new issues or support non-bugs, and no support or discussion forum is planned. Verification is manual, with no CI connected to real Macs and monitors. The releases page lists v1 as the latest release. The listed controls include DDC/CI, input switching, and command-line access.