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 - [CSVFiddle](https://csvfiddle.io/) - Free tool to explore and share insights from CSV files using SQL. Import data, write SQL, then instantly share it with anyone.
 - [Codapi](https://codapi.org/duckdb/) - Embed executable code snippets directly into your product documentation, online course or blog post.
 - [QuackDB](https://app.quackdb.com/) - Open-source online DuckDB SQL playground and editor.
+- [WhatTheDuck](https://whattheduck.incentius.com/) - WhatTheDuck is an open-source web application built on DuckDB. It allows users to upload CSV files, store them in tables, and perform SQL queries on the data.
 
 ## Libraries Powered by DuckDB