A new open-source project called Nub aims to make JavaScript development simpler by bundling several separate tools into one program. The creators compare it to Bun, another tool trying to do the same thing.

Nub, published on 24 June 2026, works like this: it's a single application that lets developers run JavaScript code, install third-party libraries, and manage different versions of Node.js—all without switching between multiple separate programs. Node.js is the JavaScript runtime that lets developers run JavaScript outside a web browser.

Why does this matter? Right now, developers typically juggle several tools. One tool manages which version of Node.js you're using. Another installs libraries your code depends on. A third runs your code. Each tool works well on its own, but together they create friction: new team members need to learn all three, scripts that automate development get complicated, and setting up a new computer takes time. Nub's idea is simple—one tool, one command, less complexity.

The most obvious comparison is Bun, a tool made by a company called Oven that also tries to bundle everything into one application. Both tools aim to save developers time and mental energy. Nub takes a different approach than Bun, though. Bun replaces the underlying Node.js engine entirely with its own. Nub instead wraps around Node.js and manages it, keeping the original Node.js engine underneath. For teams that depend on specific Node.js features or libraries written in C++, this difference matters—switching to Bun can be risky, but Nub's approach would be safer because it keeps Node.js intact.

Nub is written in Rust, a programming language known for speed and safety. This is becoming normal for developer tools—many newer tools are written in compiled languages like Rust, Go, or C++ instead of JavaScript. The advantage is faster startup times and easier installation, which is especially important for a tool whose job is to get Node.js running in the first place.

One important caveat: Nub is very new. A project released on the day it was announced is nowhere near ready for production use. Bun has had years to mature and gain ecosystem support. Right now, all we can see is what Nub's creators say it will do, not actual performance, real-world use, or proof that it's stable. Developers looking at Nub should keep that in mind.

Over the past few years, the JavaScript development community has debated what the future of tooling should look like. Deno, another alternative to Node.js, initially rejected compatibility with the existing Node.js ecosystem but eventually added support for it. Bun made compatibility a priority from day one. Nub seems to offer a middle path—not a complete replacement, but a cleaner way to manage Node.js itself.

For teams already using Node.js who want simpler tooling without major changes, Nub could be useful. For new projects willing to switch to Bun and accept its differences, Bun might be the better choice.

You can find Nub at github.com/nubjs/nub. If you work in development, it's worth keeping an eye on. That said, new tools built in Rust vary widely in how successful they become—some grow into essential infrastructure, and others remain interesting experiments.