Alternatives to Kaggle/other sites for machine learning & competitions.
Kaggle is the best, but there are a few alternatives:
https://challenger.ai
https://www.crowdai.org
https://www.drivendata.org
https://www.kdd.org
http://codalab.org/
https://www.crowdanalytix.co
https://www.datasciencechallenge.org
https://www.analyticsvidhya.com
https://www.topcoder.com
https://www.kesci.com
https://www.datafountain.cn
https://grand-challenge.org
https://signate.jp
http://www.dcjingsai.com
https://www.innocentive.com
#engineeringML