The LiveSchema initiative gathers a huge amount of graph-structured data sets from a collection of already existing catalogs.
It provides an extensive range of data formats (TTL, RDF, and FCA), and access methods (full-text search, data dump or SPARQL).
Besides providing a hub of the most valuable existing schema catalogs, the main mission is to offer a family of services to
easily access, accurately understand, manage, analyze, and re-use data in the context of vertical domain knowledge application development and statistical relational learning.