WebDuck turns DuckDB into a self-hosted server with a REST API and browser-based Web UI. It enables querying CSV, Parquet, JSON, and other formats using SQL through HTTP endpoints or the interactive interface. Built with FastAPI and distributed as a PyPI package and Docker image, it is designed for developers who need lightweight, embedded analytics without the overhead of traditional database servers.
In the Developer Tools space, WebDuck takes a focused approach. It focuses on running analytical SQL queries on local files (CSV, Parquet, JSON) without managing a full database server. It is built as an open-source project for developers. The project is open source (MIT). It ships for the web, the command line, and API, and it can be self-hosted.
Behind WebDuck is autumo Switzerland, based in Switzerland, and it first shipped in 2026. The project is developed in the open on GitHub with 13 stars and 70 commits in the last 90 days. Among its 6 catalogued features are REST API, Web UI, and SQL Queries. It exposes integrations via a public API.
Summary written by a language model from the project’s public pages.
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