Actually Run Javascript Everywhere.
Small and modular JavaScript runtime for desktop and mobile.
Fast, Lightweight Runtime for Modular JavaScript Apps.

Small and modular JavaScript runtime for desktop and mobile. Like Node.js, it provides an asynchronous, event-driven architecture for writing applications in the lingua franca of modern software. Unlike Node.js, it makes embedding and cross-device support core use cases, aiming to run just as well on your phone as on your laptop. The result is a runtime ideal for networked, peer-to-peer applications that can run on a wide selection of hardware.

• Bare @ GitHub.

A tiny JavaScript runtime

txiki.js is a small and powerful JavaScript runtime. It targets state-of-the-art ECMAScript and aims to be WinterCG compliant.

A runtime for writing reliable asynchronous applications with Rust. Provides I/O, networking, scheduling, timers, ...

An asynchronous Rust runtime. Build reliable network applications without compromising speed.
Tokio is an asynchronous runtime for the Rust programming language. It provides the building blocks needed for writing network applications. It gives the flexibility to target a wide range of systems, from large servers with dozens of cores to small embedded devices.

• Tokio @ GitHub.

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