I'm working on a website in ASP.NET/C# and I'd like to make it possible to manage Users and Roles from the admin section in the website.Are there any reusable, probably open-source, web application that I can include in the website to do this? I know that the membership API exists and can do this but I'm looking for more than an API, such as some controls or webforms, it's a common need so I thought may be there's something to do it.