Diplôme d'études en langue française et diplôme approfondi en langue française (DELF / DALF)
The DELF (Diplôme d’Études en Langue Française) and the DALF (Diplôme Approfondi de Langue Française) are official diplomas awarded by the French National Ministry of Education to certify the competency of candidates from outside of France in the French language. These qualifications are under the authority of the CIEP (Centre International d’Études Pédagogiques).
These exams are composed of six independent diplomas corresponding to the six levels of the Common European Framework of Reference for Languages (CEFRL).
International English language testing system (IELTS)
The International English Language Testing System, is an international standardized test of English language proficiency for non-native English language speakers. It is jointly managed by the British Council, IDP: IELTS Australia and Cambridge Assessment English, and was established in 1989 (cf Wikipedia)
Diplomas de Español como Lengua Extranjera (DELE)
DELE are official diplomas issued by the Spanish Instituto Cervantes on behalf of the Spanish Ministry of Education and Science to participants who have passed a standardized test indicating their European Spanish language proficiency.