在线网课

国内

1. 公开课知识库

国际

1. Khan Academy

• Khan Academy is an American non-profit educational organization created in 2008 by Sal Khan

2. Coursera

• Coursera was founded by Daphne Koller and Andrew Ng（吴恩达） in 2012 with a vision of providing life-transforming learning experiences to learners around the world. 旁听+奖学金机制 ≈ 免费

3. edX

• edX is an American massive open online course provider created by Harvard and MIT.