Wasmtime is a standalone, open-source runtime for WebAssembly (Wasm), the
WebAssembly System Interface (WASI), and the Component Model. Developed by the
Bytecode Alliance, it is designed to run WebAssembly code outside of a web
browser, either as a command-line utility or as a library embedded within
larger applications.

Core Features:
* Performance: Built on the Cranelift optimizing code generator, Wasmtime
  quickly generates high-quality machine code using either Just-In-Time (JIT)
  or Ahead-Of-Time (AOT) compilation.
* Security: It prioritizes correctness and security, leveraging Rust's safety
  guarantees and undergoing continuous 24/7 fuzzing.
* Standards Compliance: Wasmtime passes the official WebAssembly test suite
  and implements the WebAssembly C API.
* Configurability: While it uses sensible defaults, it allows fine-grained
  control over resource consumption, such as CPU and memory limits.

Related port: devel/libwasmtime. It is the same Wasmtime run-time built
as a C/C++ library.