ETS (Educational Testing Service) is the organization responsible for developing and administering the TOEFL (Test of English as a Foreign Language) exam.

IELTS (International English Language Testing System) is administered by a partnership of three organizations: the British Council, IDP Education, and Cambridge Assessment English.

Cambridge Assessment English is the organization responsible for developing and administering the Cambridge English exams, including the Cambridge English First (FCE), Cambridge English Advanced (CAE), and Cambridge English Proficiency (CPE) exams.

Pearson VUE is the organization that offers the Pearson Test of English (PTE), a computer-based English language proficiency test.

The TOEIC (Test of English for International Communication) exam is developed and administered by the Educational Testing Service (ETS).

The Duolingo English Test is offered by Duolingo, a language learning platform.

The HSK (Hanyu Shuiping Kaoshi) exam is developed and administered by Hanban, a Chinese government agency.

The JLPT (Japanese Language Proficiency Test) exam is offered by the Japan Foundation, a Japanese government agency.

The DELE (Diplomas de Español como Lengua Extranjera) exam is developed and administered by the Instituto Cervantes, a Spanish government agency.

The TCF (Test de connaissance du français) exam is offered by France Éducation international, a French government agency.

The CELPE-Bras (Certificado de Proficiência em Língua Portuguesa para Estrangeiros) exam is developed and administered by the Ministério da Educação (Ministry of Education) of Brazil.

The CILS (Certificazione di Italiano come Lingua Straniera) exam is offered by the Università per Stranieri di Siena, an Italian university.

The DELF (Diplôme d'Études en Langue Française) and DALF (Diplôme Approfondi de Langue Française) exams are developed and administered by France Éducation international, a French government agency.

The SIELE (Servicio Internacional de Evaluación de la Lengua Española) exam is offered by the Instituto Cervantes, a Spanish government agency.

The YCT (Youth Chinese Test) exam is developed and administered by Hanban, a Chinese government agency.