- (The) Altman Group
- Audit Integrity
- CTW Investment Group
- CLSA (Credit Lyonnais Securities Asia)
- CRISIL (Credit Rating and Information Services of India)
- Davis Global Advisors
- Deminor
- Egan-Jones
- Egon Zehnder International, Global Board Index™
- European Corporate Governance Service
- Georgeson
- Glass, Lewis & Co.
- Global Proxywatch
- Governance for Owners
- GovernanceMetrics International
- ICRA (formerly Information and Credit Rating Agency of India Limited)
- (IVIS) Institutional Voting Information Service, Guidelines
- IRRC (Investor Responsibility Research Centre) Institute
- Manifest
- Marco Consulting Group
- Moody’s, Corporate Governance
- Morrow & Co.
- Nestor Advisors
- PIRC (Pension Investment Research Consultants Ltd.)
- Proxy Governance
- RiskMetrics Group, Proxy Advisory Services
- SpencerStuart, Board Indexes
- Standard & Poor’s, “GAMMA” (Governance-Accountability, Management Metrics & Analysis)
- The Corporate Library, Board Analyst
- Vereinigung Instituionelle Privatanleger e. V.
Updated on April 18th, 2014.