f.lux is a cross-platform computer program that adjusts a display's color temperature according to location and time of day. Developed by f.lux Software LLC
License: Free
f.lux is a proprietary software that offers extensive customization and integration options, especially for smart lighting, making it suitable for general users. In contrast, Redshift is an open-source alternative that provides a more technical approach with lower performance impact, ideal for advanced users who prefer flexibility and control.