Dave's ESL cafe
http://www.eslcafe.com/
Dave's ESL Cafe contains a wealth of information and is a great place for ESL students and teachers to meet. The site contains chat rooms, discussion forums, quizzes, teaching ideas and a help centre for those needing help with their English.

englishpage.com
http://www.englishpage.com/
The site contains information and activities such as games, discussions and dictionaries The best part of the site is the English tutorials with interactive exercises for students to complete.

English online
by Easton Language Education
http://eleaston.com/materials.html
This website contains a list of materials for teaching and learning English. Some material is divided in subject areas so from this site you can find material to help you teach English in areas such as art, medicine, movies, politics as well as information relating to grammar, reading, writing, speaking and pronunciation.

English as a second language
by Rong-Chang Li
http://www.rong-chang.com/
The website is a starting point for people who want to learn English through the Web. This site links you to free web sites where you can learn English. The wide variety of materials will allow students to choose something appropriate for their level.

Interesting things for ESL students
http://www.aitech.ac.jp/~itesls/
This web site is for students studying English as a Second Language. There are quizzes, word games, word puzzles proverbs, slang expressions, anagrams, a random-sentence generator and other study materials. Even though the primary focus is for ESL, native English speakers may also find some interesting things on this site. 

ESL partyland
http://www.eslpartyland.com/
From the student section, students can access over 75 interactive quizzes, 15 discussion forums, interactive lessons on a variety of topics, a chat room plus lots of great links. The teacher section provides teachers with lesson plans and reproducible materials to use in class.

Randall's ESL cyber listening lab
http://www.esl-lab.com
Various listening quizzes and exercises to be used for self-directed study. A huge number of topics are covered at different difficulty levels.