1) Data Visualization Playground:  https://linhtruong.com/project/datavisualizationplayground
30 chart types and 23 sample datasets for Data Visualization, Transformation, and utilities…

2) Machine Learning Playground:  https://linhtruong.com/project/machinelearningplayground
64 Machine Learning tools, 34 model types, 6,100+ sample data for the playground

3) AWS Playground:  https://linhtruong.com/project/awsplayground
A comprehensive playground for all of AWS services and tools…

4) Data Science Playground:  https://linhtruong.com/project/datascienceplayground
A comprehensive playground for Data Exploration, Data Clean & Transformation, Data Visualization, Machine Learning, and SQL …

5) CODING Playground:  https://linhtruong.com/project/codinginterviewplayground
A comprehensive playground for coding interviews with Python, JavaScript, and Java…