| STACK | Security Team Accountability Coherent and Knowledgeable 
| Others |
| STACK | Sooner Trend Anadarko Canadian Kingfisher
| Others |
| STACK | Strategy Tactics Attributes Conversation and Knowledge
| Others |
| STACK | Strategy, Tactics, Attributes, Conversation, and Knowledge
| Others |
| STACK | Students Teach Adults Computer Knowledge
| Others |