runtime

Node.js JavaScript runtime ✨🐢🚀✨

A lightweight WebAssembly runtime that is fast, secure, and standards-compliant

NodeSource Node.js Binary Distributions

TypeScript execution and REPL for node.js

CoreCLR is the runtime for .NET Core. It includes the garbage collector, JIT compiler, primitive data types and low-level classes.

⚡️ TypeScript Execute | The easiest way to run TypeScript in Node.js

Mono open source ECMA CLI, C# and .NET implementation.

Open-source agentic workspace enterprises can make their own. Connect the systems you already run — 100+ integrations, MCP, chat tools, apps, browser, local files — with shared memory. Any agent (Claude Code, Codex), any model, or BYOK. Set up in clicks, not months. Local-first: your data never leaves your machines.

The agent platform built on sync.

😎 Curated list of awesome resources on Compilers, Interpreters and Runtimes

ChakraCore is an open source Javascript engine with a C API.

Napa.js: a multi-threaded JavaScript runtime

μWebSockets for Node.js back-ends 🤘

The modular and type safe schema library for validating structural data 🤖

Boa is an embeddable Javascript engine written in Rust.

Ultra-lightweight JavaScript engine for the Internet of Things.

A runtime developer console and IRB alternative with powerful introspection capabilities.

Runtime type system for IO decoding/encoding

A library for patching, replacing and decorating .NET and Mono methods during runtime

wazero: the zero dependency WebAssembly runtime for Go developers