general catalog of BnF vs Union catalogue of Czech Republic

How do general catalog of BnF and Union catalogue of Czech Republic compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.

Directory details: general catalog of BnF and Union catalogue of Czech Republic
Directory detail	general catalog of BnF	Union catalogue of Czech Republic
What it is	Search the Bibliothèque nationale de France's general catalog and filter holdings available through its reading rooms or Gallica.	Search the Czech Republic's union catalog for books, magazines, articles, and library holdings.
Website	catalogue.bnf.fr	caslin.cz
Type	Website	Website
Topic	Academic Search	Academic Search
Pricing	Not confirmed	Not confirmed
Platforms	Web	Web
Open source	Not stated	Not stated
Language	French	—
Alternatives	4 alternatives	11 alternatives