BEST online competitions TO FOLLOW Every data scientist and aspirant must need to know
1.Kaggle-https://www.kaggle.com/
kaggle-solutions https://github.com/faridrashidi/kaggle-solutions
2.hackerearth-https://www.hackerearth.com/challenges/
3.machinehack-https://www.machinehack.com/
4.analyticsvidhya-https://datahack.analyticsvidhya.com/contest/all/
5.zindi-https://zindi.africa/competitions
6.crowdai-https://www.crowdai.org/
7.driven data-https://www.drivendata.org/
8.dockship-https://dockship.io/Runway AI
9.SIGNATE Competition- https://signate.jp/about?rf=competition_about
9.International Data Analysis Olympiad (IDAHO)
10.Codalab
11.Iron Viz
12.Data Science Challenges
13.Tianchi Big Data Competition
14.https://www.techgig.com/hackathon/ml_hackathon
check my repository for more details