WasmHub

Open-source WASM Hub of language runtimes. Download and manage versioned WebAssembly runtimes for Go, Rust, and more — usable as a Rust library, a CLI tool, or via CDN.

Why WasmHub?

• Multi-language — Go and Rust today; Node.js, Python, Ruby, PHP planned
• Smart caching — download once, use forever
• Type-safe library — Rust API with compile-time guarantees
• Multi-CDN fallback — GitHub Releases + jsDelivr with automatic failover
• SHA256 verification — every download is integrity-checked
• Cross-platform — Linux, macOS, Windows

Quick install

As a CLI:

cargo install wasmhub --features cli
wasmhub get go 1.23

As a library:

[dependencies]
wasmhub = "0.1"
tokio = { version = "1", features = ["full"] }

use wasmhub::{RuntimeLoader, Language};

#[tokio::main]
async fn main() -> wasmhub::Result<()> {
    let loader = RuntimeLoader::new()?;
    let go = loader.get_runtime(Language::Go, "1.23").await?;
    println!("Runtime at: {}", go.path.display());
    Ok(())
}

Where next

• Getting Started — install, first runtime, basic usage
• CLI Reference — every command and flag
• Library Guide — Rust API, builder config, feature flags
• Architecture — how runtimes flow from source to your cache
• Manifest Format — the JSON schema
• Adding a Runtime — contributor guide