Triplify provided a building block for the “semantification” of Web applications. Triplify was a small plugin for Web applications, which reveals the semantic structures encoded in relational databases by making database content available as RDF, JSON or Linked Data. Actually not available any more…
The SEALS Project is developing a reference infrastructure known as the SEALS Platform to facilitate the formal evaluation of semantic technologies. This allows both large-scale evaluation campaigns to be run (such as the International Evaluation Campaigns for Semantic Technologies) as well as ad-hoc evaluations by individuals or organizations. Use of the SEALS Platform and associated technologies is free of charge and all code is Open Source (Apache 2.0).
Pundit is a novel semantic annotation and augmentation tool. It enables users to create structured data while annotating web pages.
Annotations span from simple comments to semantic links to web of data entities (as Freebase.com and Dbpedia.org), to fine granular cross-references and citations. Pundit can be configured to include custom controlled vocabularies. In other words, annotations can refer to precise entities and concepts as well as express precise relations among entities and contents.