A standalone, fast, and secure WebAssembly runtime that is standards-compliant and supports WASI.
Wasmtime is a standalone runtime for WebAssembly designed to be embedded into applications or used as a command-line tool. It enables developers to run WebAssembly code efficiently and securely across various platforms and programming languages, solving the need for a reliable, high-performance WebAssembly execution environment outside of web browsers.
Developers building applications that need to safely and efficiently execute WebAssembly modules, including those embedding WebAssembly in server-side applications, CLI tools, or multi-language systems. It is also suitable for researchers and developers working with WebAssembly standards and proposals.
Developers choose Wasmtime for its strong emphasis on security, performance, and standards compliance, backed by Rust's safety guarantees and continuous fuzzing. Its configurability and support for multiple languages through embeddings make it versatile for diverse environments, from embedded systems to large-scale servers.
A lightweight WebAssembly runtime that is fast, secure, and standards-compliant
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Built on the Cranelift code generator for high-quality machine code, enabling low-overhead calls and scalable concurrent instances as highlighted in the README.
Leverages Rust's safety guarantees with continuous fuzzing, an RFC process, and a defined security policy, ensuring robust protection against vulnerabilities.
Offers detailed control over CPU and memory consumption through configurable settings, suitable for environments from embedded systems to large servers.
Provides rich APIs for host environment interaction via the WebAssembly System Interface, facilitating seamless integration with system resources.
Embedding in non-Rust languages requires managing C APIs or language-specific bindings, adding initial setup complexity beyond the CLI.
Implementation of future WebAssembly proposals may lead to API changes and breaking updates, necessitating ongoing maintenance for stable deployments.
Full utilization of advanced features like configurable security and performance options demands a deep understanding of WebAssembly internals and system programming.