LLRT

It brings together the full power of the Perl programming language and the Apache HTTP server. You can use Perl to manage Apache, respond to requests for web pages and much more.

Use the tools you know and the languages you love. Compile everything to WebAssembly. Run it on any OS or embed it into other languages.

It is an open-source JavaScript/Wasm runtime based on the same code that powers Cloudflare Workers. It shares most of its code with the runtime that powers Cloudflare Workers, but with some changes designed to make it more portable to other environments.

It is a single executable and runs on Windows, macOS and Linux. It spawns lightweight processes from WebAssembly modules that have their own heap/stack. These processes are preemptively scheduled on a multi-threaded executor.

It is a lightweight, high-performance, and extensible WebAssembly runtime for cloud-native, edge, and decentralized applications. It powers serverless apps, embedded functions, microservices, smart contracts, and IoT devices.

It is an open-source toolchain from Shopify that promises a straightforward way to build and execute simple Ruby programs in WebAssembly runtimes.