Mai jos sunt enumerate unele dintre companiile care au utilizat sau utilizeaza ECDL:

Romania: Asociatia Romana a Bancilor, Camera de Comert si Industrie a Romaniei si Municipiului Bucuresti, Asociatia Oamenilor de Afaceri din Romania, Universitatile din: Bucuresti, Iasi, Craiova, Bacau, Academia de Studii Economice Bucuresti, PCNet

Franta: AXA, Crédit Lyonnais, Tarkett Sommer, Cofiroute, Castorama, Unibail, Renault DTSI, KPMG, SONOVISION ITEP, Matra Datavision, Banque de France, SPB, Grand Optical.

Germania: Siemens, Henkel, BMW

Irlanda: ISB, AIB Bank, Bank of Ireland, First National Building Society, Pfizer, Siemens-Nixdorf, Guiness, IBM, Irish Life Insurance, Northern Telecom, Irish Country Meats, Telecom Eireann, Bio-Medical Research, ACC Bank, Sea Ray Boats, Ministerul Agriculturii, Primaria din Dublin, Institutul de Administratie Publica

Italia: Sociatetea nationala italiana de cai ferate (FS), Societatea Nationala de Electricitate (ENEL)

Suedia: ABB, SEB, TETRA PAK, Handelsbanken, Volvo, Serviciul de Posta, Ministerul Apararii, Administratia Financiara, Nord Banken, Sparbanken, LM Ericsson Data Öppna Dataskolan, Forsakringskassan, IKEA, SKANSKA