The MVC WSAT seems to be the tool of choice for providing website administration functionality for ASP.NET MVC websites.
In addition, although the ASPNetWSAT tool is no longer available in Codeplex, it is still available locally. See This Topic: ASP.Net WSAT (Website Administration) Starter Kit. What happened? and check out the last post!
To answer your specific question, the MyWSAT tool is fairly well written and durable and used by quite a few people on their sites (many people were very upset when they removed it from Codeplex!). If you have not written your own website administration tool or paid for a commercial component, this is the best of them.
The MVC WSAT tool is a re-release of the original MyWSAT tool specifically designed for websites developed by ASP.NET MVC, and the MVC WSAT should be used instead of MyWSAT for MVC sites.
EDIT:
Starting in April 2010, the MyWSAT project was again available by the original author on Codeplex!
Get it here: http://mywsat.codeplex.com/
Craigtp
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