Virtual International Authority File vs Madrigal Database

How do Virtual International Authority File and Madrigal Database compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.

Directory details: Virtual International Authority File and Madrigal Database
Directory detail	Virtual International Authority File	Madrigal Database
What it is	VIAF combines multiple library name authority files into a single OCLC-hosted authority service.	The Madrigal Database manages and serves archival and real-time data from upper-atmosphere science instruments in multiple formats.
Website	viaf.org	cedar.openmadrigal.org
Type	Website	Website
Topic	Open Data & Datasets	Open Data & Datasets
Pricing	Not confirmed	Not confirmed
Platforms	Web	Web
Open source	Not stated	Not stated
Language	English	—
Alternatives	24 alternatives	24 alternatives