Propulsion for your web backend

Spincast is an highly flexible and open source Java web framework, based on Guice.

Any web application

Spincast is a framework to serve as a backend for Single Page Applications (SPA), to develop old-school HTML generated websites or even to be a REST web service / microservice platform.


Spincast is based on Guice from the ground up. It is very flexible: each part can be tweaked/overridden, even the core classes. There are no static methods and no private methods.

.... very flexible!

Spincast aims to feel more like a library than like a framework. It is not opinionated and favors configuration over convention.


Spincast is composed of a small core and a plugins ecosystem.


WebSockets are fully supported. Even by the Spincast HTTP client!

Embedded server

The embedded server makes everything easy to develop, test and deploy... Think Node.js + Express, but easier to develop (no asynchronous code) and using a better language than Javascript!

Powerful router

Spincast's powerful router is injectable and dynamic. That means you can add and remove routes from anywhere in your application, at any time.

Compatible and tested

Spincast is validated using more than 1600 tests.