Kaggle - Kaggle offers innovative business results and solutions to companies.

Driven Data - DrivenData hosts data science competitions to build a better world, bringing cutting-edge predictive models to organizations tackling the world's toughest problems.

HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.

Numerai - Hedge fund that crowdsources market trading from AI programmers over the Internet

Colaboratory - Free Jupyter notebook environment in the cloud.

Keycloak - Open Source Identity and Access Management for modern Applications and Services.