https://BitBank.nz a cryptocurrency prediction dashboard with live updating charts, API access, bulk data.

Its cool because i get deep into data engineering/analytics, machine learning/AI. Its using latest Google Cloud tech and my customers are always pushing me to better the product, myself and have done lots of work in open source.

Its interesting seeing what the customer perceptions of data science/prediction systems are and dispelling some of the rumors and snake oil e.g. forecasts get less accurate with time so people shouldn't trust out of date forecasts that are forecasting a long way into the future.