Which framework do you use most often in your work?

In my work with Node.js, I most often use the Express.js framework. It is lightweight, flexible, and allows for quick development of server applications and REST APIs. Here's an example of a simple server using Express:

const express = require('express');
const app = express();

app.get('/', (req, res) => {
  res.send('Hello World!');
});

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

Express is well-suited for most web development tasks on Node.js.