As an applicant to a foreign university you must enquire more about these exams and find out which exam's score is accepted at the university of your choice.
IELTS: The International English Language Testing System (IELTS) is a test taken by people who intend to study or work in a country where English is the language of communication.
IELTS is available in two versions - Academic and General Training. Academic IELTS is for those who apply for higher education or professional registration. General Training is for those who migrate to Australia, Canada and the UK or apply for secondary education, training programmes, and work experience in an English-speaking environment.
IELTS score is accepted by more than 10,000 institutes and training organizations across the world.
TOEFL: TOEFL is one of the most popular English-language test accepted by more than 9000colleges, universities, and agencies in more than 130 countries Australia, Canada, UK, and USA.
The registration for TOEFL goes on throughout the year and there are almost 50 tests conducted in a year.
CAE: Cambridge English: Advaced (CAE) is another English-language test which is accepted as a proof of English language ability. This test is accepted by 100% universities in UK.
The test dates are available throughout the year. There are 2800 test centres in 130 countries. The exam is both paper-based and computer based.
CPE: Cambridge English: Proficient (CPE) is another of the English language tests which are accepted by all the universities in UK. This is conducted in both pen-paper mode and online mode.
The exam dates for this test are generally available every two months and the exam is conducted at over 2800 centres in 130 countries around the world.
Read Here: How To Apply To A Foreign University?