Nombo is described as 'Open Source Node.js framework that allows you to easily build Rich Cloud Applications' and is an app in the Development category. There are more than 50 alternatives to Nombo for a variety of platforms, including Mac, Windows, Linux, Online / Web-based and Self-Hosted solutions. The best alternative is jQuery, which is both free and Open Source. Other great apps like Nombo are AngularJS (Free, Open Source), ExpressJS (Free, Open Source), Meteor (Free, Open Source) and Polymer (Free, Open Source).
Polymer is a library that uses the latest web technologies to let you create custom HTML elements. Build anything from a button to a complete application as an encapsulated, reusable element that works across desktop and mobile.
You can write less code with Ember's Handlebars integrated templates that update automatically when the underlying data changes. Ember.js incorporates common idioms so you can focus on the development of your application ( and not reinventing the wheel ).
Forward-thinking Written with ES2016. Integrates with Web Components. No external dependencies except polyfills. Leverage the technology of the future but target today's mobile, desktop and browser environments.