General

Securities and Exchange Commission
General Secretariat for Commerce
Hellenic Bank Association
Hellenic Management Association
Athens Chamber of Commerce and Industry
Insurance companies association
Association of Greek Institutional Investors
European Union
Economic Chamber of Greece
Hellenic Federation of Enterprises
Ministry of Development
Ministry of Finance
Athens Stock Exchange 

Tax & Audit

Federation des Experts Comptables Mediterraneens
Financial Accounting Standards Board
Global Body for Professional Accountants
International Accounting Standards Board
International Federation of Accountants
Public Company Accounting Oversight Board
Taxisnet
The Institute of Certified Accountants in England & Wales
Greek taxation portal
Institute of Education and Training for SOEL
Institute of Certified Public Accountants of Greece

Payroll

Social Insurance Institute
Greek Manpower Employment Organization