The Bespin project is an area for collaboration on ideas surrounding a Web based code editor.
The Bespin prototype is a concept for said editor, and you can access it at bespin.mozilla.com.
You can also check out the code.
Within the Bespin project we have components:
- Code editor component: The editor page has a component to handle code editing. Our goal is to make this as modular as possible so people can drop it into their projects when they want to offer an interesting code editing experience. Ideally, this can be done unobtrusively (textarea if not)