We wanted to make sure that the code for it was available for the developer community to use and improve. While we’re no longer doing active development, we’ve released the code in the hopes that those folks who asked for it will use it to develop something cool. For example, it would be great to see the server ported to Google App Engine, or support for Firefox 3 implemented.
This is a really nice news as this will allow the us to hack the code to make it behave the way we always wanted/want.
http://google-opensource.blogspot.com/2008/07/open-sourcing-browser-sync.html