The Web consists of both unstructured resources such as Web pages and documents and increasing amounts of (semi-)structured open Web data. The aim of the Web observatory is to provide a central authority to observe and understand the dynamics of Web content, structure and usage. Observing the Web involves the close monitoring and understanding across all layers ranging from network infrastructure and traffic via content evolution and semantics to user behaviour and interaction. Actively shaping these aspects allows us to achieve better governance, preserve our cultural heritage, improve accessibility overcoming the digital divide, and protect each individual user on the Web.

Linked (Open) Data in particular has provided large amounts of datasets across the Web, where datasets differ fundamentally with respect to their addressed topics, resource types, licensing schemes or the provided quality. To facilitate data reuse and take-up, a Data Observatory has to observe and understand the nature of existing Web datasets and their evolution over time.

To this end, this Website aims at gathering existing research works, tools, demos or applications which contribute to the Data Observatory vision, by analysing, profiling, exploring, mapping or preserving the wealth of open data on the Web and their evolution.