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BigSemantics is a free and open-source software architecture for developing powerful applications that present interactive semantic information (metadata) from diverse information sources. Semantic information provides a summary of the underlying information resource that can be seen by the user without leaving the current context or site.

An example is the Metadata In-Context Expander which helps the user maintain context while exploring linked semantic information. The MICE homepage shows semantic information for a CD on Amazon. Linked information, such as related bestseller lists or items people also buy, can be expanded in the same context. Some more examples:

Check out [the Wiki page] ( to get started with BigSemantics, or you can view [demos] (