WhatTheDuck does SQL with duckdb-wasm
Pygwalker does open-source descriptive statistics and charts from pandas dataframes: https://github.com/Kanaries/pygwalker
ydata-profiling does open-source Exploratory Data Analysis (EDA) with Pandas and Spark DataFrames and integrates with various apps: https://github.com/ydataai/ydata-profiling #integrations, #use-cases