Opa Alternatives

Ruby on Rails is an open source full-stack web application framework for the Ruby programming...

ASP.NET is a free web framework for building great Web sites and Web applications using HTML, CSS and JavaScript.

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Try for free freemium

A JavaScript framework for creating ambitious web apps

Give your JS App some Backbone with Models, Views, Collections, and Events

MVC framework making it easy to write realtime, collaborative applications that run in both Node.

AngularJS lets you extend HTML vocabulary for your application. The resulting environment is extraordinarily expressive, readable, and quick to develop.

Oracle Application Express enables the user to design, develop and deploy beautiful, responsive, database-driven applications using only web browser

Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple

Classy web-development dressed in a DSL

Next generation web framework for node.js

Fast, light, complete: 70+ jQuery-based UI widgets in one powerful toolset

Realtime MVC Framework for Node.js

a microframework for Python based on Werkzeug, Jinja 2 and good intentions.