sunsetr is a Rust-based blue-light filter for Wayland desktops that helps reduce eye strain by shifting displays from neutral daylight tones to warmer evening settings.
It targets modern compositors including Hyprland, Niri, Sway, River, and Wayfire, and can run from compositor startup configuration or as a user service.
This is free and open source software.
Key Features
- Supports multiple backends, including a native Hyprland CTM backend, hyprsunset integration, and a generic Wayland backend.
- Offers geolocation-aware and manual transition modes for controlling when colour temperature changes occur.
- Provides smooth startup, shutdown, and adaptive transition behaviour for less abrupt display changes.
- Includes a preset system for switching between different display profiles such as day, gaming, or weekend setups.
- Hot reloads configuration changes, including the main configuration file, geographic settings, and active preset files.
- Supplies command line tools for testing temperature and gamma values, selecting a city, checking runtime status, and editing settings.
- Includes IPC integration for real-time monitoring and automation from scripts or desktop applications.
Website: github.com/psi4j/sunsetr
Support:
Developer: psi4j
License: MIT License
sunsetr is written in Rust. Learn Rust with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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