* Stripes is simple in that it doesn't force developers to grok everything about it in order to get started. By not having to know all the details, or even that many of them exist, it's easy for a developer to get the basics and get started. A perfect example of this is the interceptor framework, and the before/after methods. A developer can be blissfully ignorant of these with no negative consequences. But when a need for such a function arises, they are easy to discover. * Stripes, at its core, is an action framework and action frameworks as a whole don't shy away from the fact that the entire web is implemented on top of a stateless protocol (HTTP). It supports backward compatibility.

* One language for the whole application - Java, the #1 programming language in the world, is probably already used by your persistency and business layer. With Vaadin, you'll leverage the same proven language, professional tooling and skills to build your web UI. No need to touch markup languages or JavaScript. * UI logic is right next to your data - Vaadin UI code lives in a JVM, in your web server. That's where your data and business logic also exist. This makes accessing your data and business logic really simple and efficient. No need to expose REST services or think up other ways to move the data to the browser. * Extensible with Java and HTML5 - The component-based programming model and Java encourage writing reusable modules. It is also easy to wrap existing HTML widgets or get down to the low level browser technologies when you need something special. There are also hundreds of community contributed extensions available. * Strong abstraction of web technologies - Familiar component-based programming model helps you to build modern single-page HTML5 apps, without getting your hands dirty with low level web technologies. You can apply the skills you have learned with UI frameworks, like Swing and SWT, and concentrate on your domain problems. Vaadin will take care of client-server communication, browser differences, markup languages, CSS and even upcoming new web technologies.