DisplayCAL 3.8.9.3 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The following versions: 3.8, 3.6 and 3.1 are the most frequently downloaded ones by the program users.
DisplayCAL was developed to work on Windows 7, Windows 8, Windows 10 or Windows 11 and is compatible with 32-bit systems. The software lies within System Utilities, more precisely Device Assistants. We recommend checking the downloaded files with any free antivirus. The common filenames for the program's installer are DisplayCAL-apply-profiles.exe or DisplayCAL.exe etc. This free software is a product of Florian Höch.
From the developer:
DisplayCAL can be used to calibrate and characterize your display devices using various supported measurement instruments. It helps you work with colorimeter corrections for different display device types to increase the absolute accuracy of colorimeters. Test chart editor lets you create charts with any composition of color patches, copy & paste data from CGATS, CSV files, and spreadsheet applications for profile verification and evaluation.
You may want to check out more software, such as NETEagle, VideoCAM Look or iDEN Phonebook Manager, which might be similar to DisplayCAL.
Device Assistants