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dlvhex is a prototype solver for HEX-programs which integrate Answer-Set Programs with higher-order reasoning and external computation sources. It comes with a full-fledged plug-in framework for rapid extension development.
iMeMex is a dataspace management system. iMeMex is a research prototype. The package also provides several useful components for research such as external sorting, B+-trees, inverted indexes, content converters, query operators, and graph indexes.
MighTyD is a prototype for demo puposes & the first implementation of the temporal database model devised by Nikos Lorentzos, Hugh Darwen & CJ Date. It uses Tutorial D as its language & PostgreSQL for storage & is compliant with the The Third Manifesto.