Percival – Web-based reactive Datalog notebooks, made with Rust+Svelte

In plain words

Percival is a web-based notebook environment for writing and executing Datalog, a logic programming language. Built with Rust and Svelte, it provides a reactive interface where users can write queries and see results update in real-time. The tool is designed for developers and data analysts who work with logical rules and relational data, offering an interactive way to explore and test Datalog programs without requiring local installation.

written from the facts on this page · September 2026

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