Wasmi is a cutting-edge, lightweight WebAssembly (Wasm) interpreter designed for efficiency in constrained and embedded systems, supporting version 0.31.0 as audited by SRLabs. The interpreter ensures simple, accurate, and deterministic execution of WebAssembly, featuring low-overhead cross-platform runtime and JIT bomb resistant translation, while closely mirroring the Wasmtime API and achieving full compliance with WebAssembly specification tests. With built-in fuel metering and experimental WASI (wasip1) support through the wasmi_wasi crate, Wasmi extends its capabilities to the official Wasm C-API via the wasmi_c_api_impl crate. It supports numerous WebAssembly proposals, including notable implementations for mutable-global and multi-memory, and maintains a commitment to expand its proposal support. Developers are encouraged to clone the Wasmi repository and utilize cargo for building, testing, and benchmarking on various platforms, ensuring maximum performance through targeted benchmarking commands. Wasmi’s flexible licensing under Apache License 2.0 or MIT license fosters community contributions, with dual licensing for submitted inclusions, promoting a vibrant open-source ecosystem.