Grids, GUI and other MFC components (open source). Also offer ASP and ASP.NET Charts controls, as well as a comprehensive TCP/IP kit (open source).

The MFC extension framework library that allows you create MS-Office (tm)-like applications with the full toolbars/menus customization.Set of four date/time ActiveX controls (Date/Time Picker, Month Calendar, Duration Control, Time Intervals Control).

A free MFC library to customize your controls.

An MFC extension library, which allows a C++ developer to create up-to-date, powerful and robust user interface ( GUI ) in Microsoft Visual C++ 6 and Microsoft Visual C++ .NET environment. [Commercial]

Includes classes to implement tray icons, DIBs, menu style bars, and menus.

Visual C++/MFC tutorial exploring different classes that are part of the MFC library.

An MFC resource site offering mailing list archives, novice tips, KB pointers, source code, events, user groups, tools, and related links.

A MFC extension library for graphs, diagrams and networks, with an option for automatic layout. By Northwoods Software. [Commercial]

At CodeGuru site.

Home of CSizingControlBar, a resizable MFC control bar library. Free source code for creating docking windows, with samples, programming manual, FAQ, and message board.