Looking for perfect web toolkit. Problem definition

Intro

This is what prompted the search for the perfect web platform:

It's January of 2010. I have been drinking the Git KoolAid for almost a year now rather intensively. Thing is, in my organization (.Net, Windows shop) it was just me doing it (over Cygwin). I wanted to share the goodness of Git with coworkers.

The problem is that for closed-source, Windows-based shops there is not that much goodness to be had. There is just mediocre here and there. And, then, there is just plain appalling when it comes to internally-deployable web interfaces that manage team access to the Git-based repos.

There are some present internally-deployable web-based shells for repo / user management, where Gitorious is the best example, but, like all gems and rubies go, there are always rough edges. In case of Gitorious (circa Jan 2010) it was the "it runs at root of the domain." Other web-based front-ends are just too subpar to even consider.

So, the problem is...

No off-the-shelf, internally-deployable software that could offer the functionality of GitHub (Easy project with multiple repo creation, cloning, adding people to the group of authorized comitters) and, hopefully be of non-monolithic construction, so that we could plug in things like asynchronous messaging (XMPP, Stomp etc), live chat (think team collaboration and user support) over Comet (aka reverse AJAX, aka Server Push), 3rd party software and Web2.0 services.