Are you to looking to find products, extensions, and add-ins for Visual Studio.
Your search ends at Microsoft Website. Microsoft is providing Gallery with
Tools (Build, Coding, Data, Documentation, Modeling, Performance, Programming Languages, Reporting, Security, Setup & Deployment,Source Control, Team Development, Testing and Web )
Controls (ASP.NET Controls, Silverlight Controls, Sharepoint Controls, Windows Forms Controls, WPF Controls and Framework & Libraries)
Templates (ASP.NET, Office , Mobile Device, Silverlight, SQL Server, WCF, Windows Forms, Workflow and WPF)
click here to access all the above mentioned Tools, Controls and Templates.
Happy Coding !!!