server.js is described as 'A modern, powerful server for Node.js' and is an app in the Development category. There are seven alternatives to server.js for a variety of platforms, including Mac, Windows, Linux, Node.JS and Self-Hosted solutions. The best alternative is ExpressJS, which is both free and Open Source. Other great apps like server.js are Meteor (Free, Open Source), FeathersJS (Free, Open Source), Koa (Free, Open Source) and Fastify (Free, Open Source).
Expressive middleware for node.js using generators via co to make web applications and APIs more enjoyable to write. Koa's middleware flow in a stack-like manner allowing you to perform actions downstream, then filter and manipulate the response upstream.
Sails.js make it easy to build custom, enterprise-grade Node.js apps. It is designed to mimic the MVC pattern of frameworks like Ruby on Rails, but with support for the requirements of modern apps: data-driven APIs with scalable, service-oriented architecture.
Lumen is the stunningly fast micro-framework by Laravel. Use the Laravel features you love like Eloquent, caching, queues, validation, routing, middleware, and the powerful Laravel service container. All with almost zero configuration.