The International English Language Testing System (IELTS) is one of the most popular English language tests all around the world.

The B2 First test, that is known among many English learners and teachers as FCE, is the most popular English exam of the Cambridge ESOL exam series.

C1 Advanced test, still known in many institutions and universities by its former name, CAE, is one of the advanced Cambridge ESOL examination series.

A2 Key test formerly known as KET, is the first test of the Cambridge ESOL examination series. This test evaluates language learners' proficiency in elementary and everyday communication in English.

The TEF test stands for the Test d'évaluation du français and means (The Standard French Test).This test intends to assess the non-French speakers’ proficiency level.

One of the most popular and authentic English tests is the internet-based TOEFL test or TOEFL IBT.