Mozilla Labs Concept Series
As part of its ongoing work to improve the way people experience the web, Mozilla Labs promotes its Concept Series, in which anyone can develop and submit user experience concepts for future versions of Firefox.
Mozilla Labs defines its mission as:
Laboratories are where science and creativity meet to develop, research, and explore new ideas. Mozilla Labs embraces this great tradition – a virtual lab where people come together to create, experiment, and play with new Web innovations and technologies.
Meanwhile:
The Concept Series aims to provoke thought, facilitate discussion, and inspire future design directions for Firefox, the Mozilla project, and the Web as a whole.
Though still a new project, I expect the Concept Series to generate many ideas over time, keeping Firefox and other Mozilla projects at the forefront of the open web and software user experience and user interface design.