Coursera

Coursera is an education company that partners with the top universities and organizations in the world to offer courses online for anyone to take, for free.

It provides 400+ courses in English, Chinese, French, Spanish, German,etc.
It is followed by 4 million of Courserians and the number is growing by day.

Homepage: https://www.coursera.org/
Twitter: @Coursera

Personal Experience:

I knew about Coursera company when reading Typesafe newsletter in my email account. When I knew that Mr. Marty Ordesky was going to teach functional programming in Scala at Coursera, I enrolled into the course and worked really hard to pass it.

The Coursera experience is so good that I visit the site frequently to look for courses that are either interesting or relevant to my job and enroll into them. On average, I complete two out of three courses per term.