Socrata Open Data Server, Community Edition by Saf Rabah.
From the post:
Socrata, the leading provider of cloud-based open data systems, today announced the “Socrata Open Data Server, Community Edition,” to be offered as an open source reference implementation for open data standards. Designed expressly to promote data portability throughout the open data ecosystem, and support open source software policies in public organizations around the globe, the “Socrata Open Data Server, Community Edition” will be released in the first quarter of 2013, as freely downloadable open source software and fully integrated with other components of the company’s commercial software products.
To learn more about the proposed open data standards, or to get involved in this community effort, please visit http://open-data-standards.github.com.
Looking forward to the release!
Resources on open data and various standards efforts related to the same.
Even with extensions, DCAT (Data Catalog Vocabulary) is going to leave a lot of room for mapping semantics between data sets.