I am new to ASP.NET MVC, so I was looking out for open-source projects either on Codeplex/Github/Bitbucket which I can look at and understand how to implement authentication, authorization and implement remember me, cookie management and stuff.
Can some one please guide me to any good projects that has a nice implementation on authentication and cookie management.
There are very many open source projects which implement authentication, authorization and implement remember me, cookie management. They are different from simple to complex portal systems like Orchard cms.
For beginning it would be nice to explore microsoft music tore tutorial and part in which explained authentification and authorization http://www.asp.net/mvc/tutorials/mvc-music-store/mvc-music-store-part-7, here is a source of it http://mvcmusicstore.codeplex.com/,
Besides forums engines is a web application which always use authorization and authentification, you can download one of mvc forums http://mvcforum.codeplex.com/ or http://nearforums.codeplex.com/
Any cms use administration part, and you can look how to implement authorization and authentification on AtomicCms https://github.com/yaplex/AtomicCms
And besides you can dig source of huge portal system like Orchard http://orchard.codeplex.com/, which implement authorization features too.