Ontology of Planning

Austin Tate, Towards a Plan Ontology (1996)

Austin Tate Plan Ontology Page

Planning Initiative Shared Planning and Activity Representation - SPAR (1997)

Philip R. Cohen and C. Raymond Perrault, Elements of a Plan‐Based Theory of Speech Acts (1979)

Summarized here

Act Editor: Procedural Knowledge Browser/Editor

ESRI: Military Operations