GRE or Graduate Record Examinations is a test that seeks to evaluate the applicant’s capability for higher study. This test does not focus on a specific area, but it covers a variety of fields. General GRE evaluates the applicant’s Verbal, Mathematical and Analytical Writing skills.
TOEFL or Test of English as a Foreign Language is a test designed to evaluate the applicant’s ability to read, write, and use the North American English language, which is not their native language.
The PTE test is also an English Language test, which was created to measure the applicant’s readiness to engage in a course of study with English as the language used for communication.
IELTS or International English Language Testing System is an alternative to TOEFL for applicants seeking to enter universities located in UK, Canada, and New Zealand. It is used to determine the ability of the applicants to use English as a form of communication.