Node.js vs. Bun vs. Deno: who will win in 2026?

Node.js: a veteran with a huge ecosystem

What is it? Node.js is a JavaScript runtime built on Google's V8 engine. Released in 2009, it has become the de facto standard for server-side JavaScript.

Key benefits:

• Huge ecosystem of packages (npm has more than 2 million packages)

• Maturity and stability - used in production by millions of companies

• A huge community and many ready-made solutions for any task

• Extensive documentation and training materials

• Support for all major hosting providers

Disadvantages:

• Relatively slow work compared to new alternatives

• Outdated module system (CommonJS), although ES modules are now supported

• Dependence on many tools (Webpack, Babel, etc.)

• Security issues due to the huge number of dependencies

Code example:

const http = require('http');

const server = http.createServer((req, res) => {
  res.writeHead(200, { 'Content-Type': 'text/plain' });
  res.end('Hello from Node.js!');
});

server.listen(3000, () => {
  console.log('Server running on port 3000');
});

Deno: a modern alternative from the creator of Node.js

What is it? Deno is a JavaScript and TypeScript runtime created by Ryan Dahl (the same person who created Node.js) in 2018. This is an attempt to fix Node.js errors.

Key benefits:

• Built-in TypeScript support without additional configuration

• Default security is explicit permission to access files, networks, and environment variables

• Modern standards — ES modules, promises, top-level await

• Built-in tools for testing, formatting, and linting

• Decentralized modules — import directly via URL

Disadvantages:

• Smaller ecosystem compared to Node.js

• Not all npm packages work out of the box

• Fewer ready-made solutions and examples

• Relatively young - some companies are cautious

Code example:

import { serve } from "https://deno.land/std/http/server.ts";

serve((req) => {
  return new Response("Greetings from Deno!", {
    headers: { "content-type": "text/plain; charset=utf-8" },
  });
}, { port: 3000 });

console.log("Server running on port 3000");

Bun: a new high-speed monster

What is it? Bun is a modern JavaScript runtime that appeared in 2022. It is built on the JavaScriptCore engine (from Safari) and written in the low-level language Zig.

Key benefits:

• Incredible speed — 2-4 times faster than Node.js in most tasks

• Built-in bundler, transpiler, and package manager

• Compatibility with Node.js — most npm packages work without changes

• TypeScript and JSX support out of the box

• Built-in development tools (testing, hot reload)

• Fast package installation — much faster than npm

Disadvantages:

• The youngest of the three (still developing)

• Not all Node.js APIs are fully implemented yet

• Fewer production cases and best practices

• Documentation is still developing

Code example:

Bun.serve({
  port: 3000,
  fetch(req) {
    return new Response("Greetings from Bun!", {
      headers: { "Content-Type": "text/plain; charset=utf-8" },
    });
  },
});

console.log("Server running on port 3000");

Performance comparison

Based on the results of independent benchmarks (end of 2024):

Launch speed:

• Bun: ~90ms

• Deno: ~150ms

• Node.js: ~200ms

Processing HTTP requests:

• Bun: ~45,000 req/sec

• Deno: ~28,000 req/sec

• Node.js: ~22,000 req/sec

Dependency installation time:

• Bun: 3-10x faster than npm

• pnpm (for Node.js): 2-3x faster than npm

• npm: baseline

Ecosystem and support

Node.js:

• 2+ million packages in npm

• Support for all cloud platforms

• A huge number of frameworks (Express, NestJS, Fastify)

• Used by 98% of companies working with JavaScript

Deno:

• Growing ecosystem of own modules

• Compatibility with npm via npm: specifier

• Official support from Deno Deploy

• Frameworks: Fresh, Oak, Aleph.js

Bun:

• Compatible with most npm packages

• Growing ecosystem of own tools

• Active development of support for popular frameworks

• More and more hosting services are adding support for Bun

  

Who will win in 2026?

Node.js will remain dominant

Node.js is not going anywhere! Its huge ecosystem, maturity and corporate support will provide it with at least 60-70% of the market in 2026. Most existing projects will continue to use Node.js.

Bun will take the second position

I predict that Bun will become the fastest-growing platform. Its speed and compatibility with Node.js make it an ideal choice for new projects. By 2026, Bun could capture 15-20% of the market, especially among startups and performance-critical projects.

Deno is a stable niche

Deno will find its audience among developers who value security and modern standards. I predict 5-10% of the market, especially in the enterprise segment with high security requirements.

What should a beginner developer choose?

Start with Node.js if:

• You are just starting to learn backend development

• Do you want a maximum of training materials and examples

• Planning to look for a job (99% of vacancies require knowledge of Node.js)

• We need stability and proven solutions

Try Bun if:

• Already familiar with the basics of Node.js

• Starting a new pet project

• Do you want to learn the most modern technologies

• The speed of development and execution is important

Explore Deno if:

• Interested in TypeScript and security

• Want to write modern code without crutches

• Planning to work with edge computing

• Appreciate minimalism and built-in tools

Practical recommendations

1. For training: start with Node.js, then learn Bun or Deno

2. For a career: Be sure to know Node.js, but keep an eye on the development of Bun

3. For new projects: Consider Bun for maximum performance

4. For corporate development: Node.js remains the safest choice

Conclusion

The battle of the three giants is just beginning! Node.js remains the king due to its ecosystem and maturity. Bun is quickly gaining popularity due to its incredible speed. Deno offers the most modern and secure approach to development.

The good news is that all three technologies use JavaScript/TypeScript, so skills are easily transferable between them. In 2026, a successful developer must know Node.js and understand the benefits of alternatives.

All this and much more can be learned in the Codex! We analyze each technology in detail, from the basics to advanced concepts, and be sure to consolidate knowledge with practical tasks.

And if you need support during the training process, we already have more than 2000 like-minded people in active telegram channel! Ask questions, share your successes, find comrades for joint projects.

Programming is not just about code, it's about a community of people who help each other grow! 🚀