International Earth Rotation and Reference Systems Service vs Earth System Grid Federation

How do International Earth Rotation and Reference Systems Service and Earth System Grid Federation compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.

Directory details: International Earth Rotation and Reference Systems Service and Earth System Grid Federation
Directory detail	International Earth Rotation and Reference Systems Service	Earth System Grid Federation
What it is	IERS provides data on Earth rotation, reference systems, and geophysical fluids, with models, standards, and current bulletins.	The Earth System Grid Federation is an open-source distributed data and computation platform for worldwide scientific collaboration.
Website	iers.org/IERS/EN/Home/home_node.html	esgf.github.io/index.html
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	English
Alternatives	24 alternatives	24 alternatives