Six months ago we released the first preview version of AS to the public. Since then happened quite a bit. We went feature complete for v1, did some bug fixing and used AS in a number of customer projects. We also got feedback both internally and via the github issue tracker. Thanks!
Today I’d like to announce v1.0 of AuthorizationServer – get it here.
AuthorizationServer’s feature set is a direct result of the various OAuth2 projects we did over the last two years. We think that the application/client/scope model is very useful in a lot of situations and simplified the architecture of many modern applications we came across. We hope it is also useful for you!
Enjoy!
leastprivilege.com 
Is there a example, or can you provide an explanation on how to convert an existing Web Forms Application to use the Authentication Server?
Hey,
no sorry – it is no problem to do that but I don’t have a sample.