TOEIC
1,210 TOEIC listening exercises
Free Practice Tests for The TOEIC Listening and Reading test
http://www.toeic-online-test.com/free-toeic-tests/
IELTS
IELTS Preparation
TOEFL
TOEFL listening
Other
ニュースで英会話
Dynamic English for Vietnamese
English as 2nd Language
http://learnenglish.britishcouncil.org/en