Net-Language site allows you to compose your own quizes and place them on the web.
Actually, that site offers much more. Please find below a list of sub-pages covering some very interesting topics:

Make Your Own Puzzles!
The puzzle maker web site was recently acquired and expanded by the Discovery Channel. It is now even easier for you to create a wide variety of puzzles for your students out of your own vocabulary list.

Teaching Indigenous Languages
The Teaching Indigenous Languages web site is a collection of essays, articles and web links on how to teach indigenous languages and keep lesser used languages alive.

Juan Manuel Soto's Grammar Lessons
Practice any aspect of Spanish grammar with interactive online grammar lessons.

Learn English from a Virtual News Broadcaster
The Press Association in the United Kingdom is unleashing the first virtual news broadcaster who reads news in English. She's sexy and powered by XML.

Distance Engineering English Program
This large collection of online activities teaches students and professionals the specialized English they need for the field of Engineering - a gold mine of organized learning for Engineering students learning English.

Become a Virtual Exchange Student in America
Seven intelligent, life-loving students living in a house in Ohio broadcast their lives out to the world 24 hours a day.

Gurunet: A One-Click Dictionary, Thesaurus and Translator
Click on any word on your screen and get a dictionary definition, a thesaurus listing and a translation into nine other languages, for free!

Call U.S. Phones from Your Computer for Free!
Dialpad.com allows anyone in the world with a computer, microphone, speakers and an Internet connection to call any U.S. phone and talk for as long as they want, for free!

Audio Highway Offers Free Online Audio Books
Improve your listening and enjoy good literature by listening to audio books online for free.

Hundreds of Jokes for the Classroom
Lighten up your English lessons with jokes