The real power of the emerges when paired with modern software. As of 2016, ASHRAE licensed the data to several platforms:
The core data within the DFDB is validated by ASHRAE Standard 120. This standard ensures that the loss coefficients for duct fittings are based on rigorous and repeatable testing, providing confidence that the digital tool is built on a sound foundation of physical data [8†L27-L31]. ashrae duct fitting database 2016
Here's a useful feature that can be built on top of this database: The real power of the emerges when paired