TOEFL (Test of English as a Foreign Language) & TOEIC (Test of English for International Communication)

Official TOEFL website	comprehensive information on the Test sample exercises
Official TOEIC website	test information
Free TOEIC Test Preparation from English Test Net	practice exercises
Free TOEFL Test Preparation from Learn4good	11 practice tests grammar tests
Free TOEFL Test Preparation from ESL Home.org	Listening Tutorial and test Structure Tutorial and test Reading Tutorial and test Writing practice
TOEFL TWE Essay scoring from Get TOEFL	get your essay automatically scored
Free TOEFL practice from English Test net	vocabulary and other exercises
Randall's Cyber Lab	helpful listening exercises pronunciation practice
Test Practice	exercises and activities
Computer-based TOEFL test practice from Jim Duber	material is a little out of date but still good practice

Source: English Study Direct