Wickra PlaygroundFour languages. One answer.

Run one StrategySpec live, side by side, byte-identical in Rust, JS, Go and Python — entirely in your browser, with no backend.

Open the playground

How it works

View on GitHub

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Proof, not a claim

Every backtest library claims cross-language consistency. The playground runs one spec through the same Rust core along four independent paths and puts the four reports next to each other.

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No backend at all

Rust→WASM, JS-over-WASM, Go-over-WASM and Python-over-Pyodide all run in the tab. Nothing is uploaded, and nothing is computed on a server.

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The strategy is data

A StrategySpec is a JSON document, not code, so the identical file crosses every runtime unchanged — which is what makes the comparison meaningful.

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The engine underneath

Built on wickra-backtest, the deterministic engine behind the rest of the stack, over the Wickra core's 514 indicators.