What is it?
Neos is an open source "Content Application Platform". A set of core Content Management features is resting within a larger context that allows you to build a perfectly customized experience for your users.
How to support
The project itself is not a formal entity that can accept donations, but the Neos community has found a partner for this. The Sandstorm company will accept donations from individuals and companies by selling badges. Aside from the standard badges, there are custom badges available on request.