The new BrowserPlus framework – a way of extending your browser capabilities – will become open source next year, which seems a sensible way to increase its adoption:
The big idea here is that we’ll have the whole platform open sourced by mid-next year, and as soon as possible we’ll have many of the services we’ve written open sourced, as well as the APIs needed to write new services. Our goal is to empower the community to contribute actual patches and new services – code to compliment the feedback.