Description: Freebase is an open, graph-shaped database of facts about the real world. Freebase aims to organize human knowledge similar to databases like Wikipedia. It allows users to contribute facts and data that can be interlinked through its graph-shaped model.
Type: software
Description: OpenCyc is an open source artificial intelligence project that aims to assemble a comprehensive ontology and knowledge base of everyday common sense knowledge. It contains hundreds of thousands of facts and rules about the world.
Type: software
Pricing: Open Source