Versions:

  • 43.0.1
  • 43.0.0
  • 42.0.1
  • 42.0.0
  • 41.0.3
  • 41.0.2
  • 41.0.1
  • 41.0.0
  • 40.0.2
  • 40.0.1
  • 40.0.0
  • 39.0.1
  • 39.0.0
  • 38.0.4
  • 38.0.3
  • 38.0.2
  • 38.0.1
  • 37.0.2
  • 37.0.1
  • 37.0.0
  • 36.0.2
  • 36.0.1
  • 36.0.0
  • 35.0.0
  • 34.0.1
  • 34.0.0
  • 33.0.0
  • 32.0.0
  • 31.0.0
  • 30.0.2
  • 30.0.1
  • 30.0.0
  • 29.0.1
  • 29.0.0
  • 28.0.1
  • 28.0.0
  • 27.0.0
  • 26.0.0
  • 25.0.2
  • 25.0.1
  • 25.0.0
  • 24.0.0
  • 23.0.2
  • 23.0.1
  • 23.0.0
  • 22.0.0
  • 21.0.1
  • 21.0.0
  • 20.0.2
  • 20.0.1
  • 20.0.0
  • 19.0.2
  • 19.0.1
  • 19.0.0
  • 18.0.3
  • 18.0.2
  • 18.0.1
  • 18.0.0
  • 17.0.2
  • 17.0.1
  • 17.0.0
  • 16.0.0
  • 15.0.1
  • 15.0.0
  • 14.0.4
  • 14.0.3
  • 14.0.2
  • 14.0.1
  • 14.0.0
  • 13.0.1
  • 13.0.0
  • 12.0.2
  • 12.0.1
  • 12.0.0
  • 11.0.2
  • 11.0.1
  • 11.0.0
  • 10.0.2
  • 10.0.1
  • 10.0.0
  • 9.0.4
  • 9.0.3
  • 9.0.2
  • 9.0.1
  • 9.0.0
  • 8.0.1
  • 8.0.0
  • 7.0.1
  • 7.0.0
  • 6.0.2
  • 6.0.1
  • 6.0.0
  • 5.0.1
  • 5.0.0
  • 4.0.1
  • 4.0.0
  • Portable

Wasmtime is a fast and secure runtime for WebAssembly developed by Crane Station, currently at version 43.0.1 and offered through 97 successive releases that collectively document its steady evolution into a production-grade execution engine. Positioned within the developer tools and runtime environment category, the software translates WebAssembly binaries into native machine code while enforcing strict sandboxing, making it suitable for running untrusted guest code inside servers, edge functions, embedded devices, or standalone command-line utilities. Common use cases include hosting portable plug-ins in content delivery networks, executing smart contracts on blockchain nodes, driving server-side functions in platform-as-a-service offerings, and enabling language-agnostic extensions for editors and databases. Thanks to its ahead-of-time compilation pipeline and configurable runtime limits, Wasmtime delivers near-native throughput with low startup latency and predictable memory footprints, giving operators fine-grained control over CPU, stack, and heap consumption. The runtime exposes a straightforward C API as well as language bindings for Rust, Python, .NET, and Go, allowing developers to embed WebAssembly modules into larger applications without sacrificing type safety or cross-platform compatibility. Continuous integration across Windows, macOS, Linux, and BSD systems ensures that every incremental update preserves backward compatibility while introducing performance optimizations, new WebAssembly proposals, and security patches. Because the entire stack is open source and governed by the Bytecode Alliance, audits and contributions from multiple vendors accelerate feature delivery and reinforce trust in the codebase. Wasmtime is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version and supporting batch installation of multiple applications.

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