The research I've done indicates there are very few. Zero if you take out Oxite and Orchid.
For what it's worth, I'm writing one right now and plan on releasing it as Open Source once it is releaseable.
The goal is to have it be easily installable and have the feel of Stack Overflow's Question asking and voting mechanism experience, using Markdown as the editor.
Phil haack has also talked about rewriting subText in ASP.NET MVC.
To answer @Zowen's comment on the WebFormViewEngine
. The Book ASP.NET MVC 1.0 by Scott Hanselman et. al., says:
As we tend to reiterate in this chapter, WebFormViewEngine
is a bit of a misnomer. We had intense debates on what to name this default View engine. We considered DefaultViewEngine
, but as you saw earlier, it's not really the default; AutoViewEngine
is. Also the name is not very descriptive.
We considered PageViewEngine
, or even AspxViewEngine
, but then what about partial Views, which are implemented as user controls? Phil [Haack] tried to put forth TemplateControlViewEngine
because the one thing that Page
, UserControl
, and MasterPage
all share in common is that they derive from TemplateControl
. That was rejected because that name was obsure, as the connection to TemplateControl
is not readily apparent or well known.
In the end, we stuck with WebFormViewEngine
because we never really came up with a better name and we deemed it good enough. Rob's [Conery] sure that, upon reading this aside, someone will come up with the perfect name and we will end up regretting the name we chose. -- From ASP.NET MVC 1.0, Page 270.