generated at
commonsense knowledge
Commonsense reasoning
Linked data and the Semantic Web
Default Reasoning
Truth Maintenance or Reason Maintenance
Ontology
Artificial General Intelligence

Cyc
Open Mind Common Sense (data source) and ConceptNet (datastore and NLP engine)
Quasimodo
Webchild
TupleKB
True Knowledge
Graphiq
Ascent++

googlecommonsense knowledge
Google画像検索commonsense knowledge
Google定義検索 commonsense knowledge
wikipediacommonsense knowledge
weblio commonsense knowledge
kotobank commonsense knowledge
jisho commonsense knowledge