@vercel/node is a serverless function framework designed to simplify the deployment of Node.js applications on Vercel's platform. It allows developers to create serverless functions that can handle HTTP requests and respond accordingly, making it an excellent choice for building APIs, webhooks, and other server-side functionalities without the need for managing server infrastructure. While @vercel/node provides a robust solution for serverless applications, there are several alternatives in the Node.js ecosystem that cater to different needs. Here are a few notable options:

• @vercel/edge is a framework for building serverless functions that run at the edge, closer to the user. This approach reduces latency and improves performance by executing functions in locations geographically closer to the end-users. If your application requires low-latency responses and you want to leverage edge computing, @vercel/edge is a compelling choice.
• express is one of the most popular web frameworks for Node.js. It provides a minimal and flexible set of features for building web applications and APIs. With its extensive middleware ecosystem, express allows developers to create robust applications with ease. If you are looking for a full-featured framework that can handle a wide range of web applications, express is a solid option.
• hapi is another powerful framework for building applications and services in Node.js. It emphasizes configuration-driven development and provides a rich set of features for building robust APIs. Hapi is particularly well-suited for large-scale applications that require a high level of customization and control over request handling.
• koa is a lightweight and modular web framework created by the same team behind express. It leverages modern JavaScript features like async/await, making it a great choice for building APIs and web applications with a more streamlined and elegant syntax. Koa is ideal for developers who prefer a minimalistic approach while still needing the flexibility to build complex applications.
• micro is a microservices framework for Node.js that focuses on simplicity and performance. It allows developers to create small, single-purpose HTTP microservices with minimal overhead. If you are building microservices and want a lightweight solution, micro is a great fit.
• polka is a tiny and fast alternative to express, designed for building web applications and APIs. It offers a familiar API while being more lightweight and performant. If you need a minimal framework for building applications quickly, polka is worth considering.
• serverless-http is a library that allows you to run existing Node.js applications on serverless platforms. It wraps your express or connect applications and makes them compatible with AWS Lambda and other serverless environments. If you want to leverage your existing Node.js application in a serverless architecture, serverless-http is a convenient solution.

To see how these packages compare, check out the comparison: Comparing @vercel/edge vs @vercel/node vs express vs hapi vs koa vs micro vs polka vs serverless-http.