| ANSI |
American National Standards Institute |
| AENOR |
Asociación Española de Normalización y Certificación |
| AFNOR |
Association Française de Normalisation |
| BSI |
British Standards Institution |
| CEI |
Comitato Elettrotecnico Italiano |
| CENELEC |
European Committee for Electrotechnical Standardization |
| DIN |
Deutsches Institut für Normung |
| IEEE |
Institute of Electrical and Electronics Engineers |
| IEC |
International Electrotechnical Commission |
| IEE |
Institute of Electrical Engineers (UK) |
| ISO |
International Organization for Standardization |
| NEN |
Nederlands Normalisatie-Institut |
| NIST |
National Institute of Standards and Technology (US) |
| STEP |
Standard for the Exchange of Product Model Data |