Whither MLS Web?

What is the general status of a project to migrate MLS to the web?

Apparently that is now on the front burner, or at least on the stove. The prospect is being discussed somewhat openly in the Wiki for the new community-developed HT/VT app:

The details of how the HT/VT app fits into plans for MLS Web are best discussed in the Wiki, but this is really bigger news because all of MLS would be affected sooner or later.

Just 15 months ago, there was no such active project.

It is being looked into, but I can say that it is still along way from coming to fruition. Some pieces such as ht/vt may be tried, but the majority of MLS as a web app is still in the envisioning stage. Even if and when it is implemented, there will most likely have to be an application that runs on most local machines because of communication limitations globally.