Bespin is a Mozilla Labs experiment that proposes an open, extensible web-based framework for code editing that aims to increase developer productivity, enable compelling user experiences, and promote the use of open standards.
As part of this announcement, we’re also releasing an early experimental prototype to demonstrate some of the concepts of Bespin and the possibilities that it opens up.
- Initial prototype framework that includes support for basic editing features, such as syntax highlighting, large file sizes, undo/redo, previewing files in the browser, importing/exporting projects, etc.
clipped from: labs.mozilla.com 
