Alternatives to Kaggle/Other sites for machine learning & competitions?

On the other hand I noticed an increase in image processing competitions, where a decent graphic card/GPU-Power is required, and also a big increase in the data set size. This limits the participation possibility due to the need of a decent graphic card/GPU-Power and highspeed network. This means new investment in further compute ressources. Based on the current changes in the progression system, the privacy (activity tracker) and discussion I am wondering. Are there other sites for machine learning available?