Microsoft

Graphics

Desktop Window Manager, Direct2D, Direct3D, D3D (extensions), GDI/GDI+, WPF, Silverlight, WinRT XAML, Windows Color System, Windows Image Acquisition, Windows Imaging Component

Audio

DirectMusic, DirectSound, DirectX plugin, XACT, Speech API, XAudio2

Multimedia

DirectX (Media Objects), DirectX (Video Acceleration), DirectInput, DirectShow, Image Mastering API, Managed DirectX, Media Foundation, XNA, Windows Media, Video for Windows

Web

MSHTML, RSS Platform, JScript, VBScript, BHO, XDR, SideBar Gadgets

Data access

Data Access Components, Extensible Storage Engine, ADO.NET, ADO.NET Entity Framework, Sync Framework, Jet Engine, MSXML, OLE DB, OPC

Networking

Winsock (LSP), Winsock Kernel, Filtering Platform, Network Driver Interface Specification, Windows Rally, BITS, P2P API, MSMQ, MS MPI, DirectPlay

Communication

Messaging API, Telephony API, WCF

Administration and management

Win32 console, Windows Script Host, WMI(extensions), PowerShell, Task Scheduler, Offline Files, Shadow Copy, Windows Installer, Error Reporting, Event Log, Common Log File System

Component model

COM, COM+, ActiveX, Distributed Component Object Model, .NET Framework

Libraries

Base Class Library (BCL), Microsoft Foundation Classes (MFC), Active Template Library (ATL), Windows Template Library (WTL)

Device drivers

Windows Driver Model, Windows Driver Foundation (KMDF), Windows Driver Foundation (UMDF), WDDM, NDIS, UAA, Broadcast Driver Architecture, VxD

Security

Crypto API (CAPICOM), Windows CardSpace, Data Protection API, Security Support Provider Interface (SSPI)

.NET

ASP.NET, ADO.NET, Base Class Library (BCL), Remoting, Silverlight, TPL, WCF, WCS, WPF, WF

Software factories

EFx Factory, Enterprise Library, Composite UI, CCF, CSF

IPC

MSRPC, Dynamic Data Exchange (DDE), Remoting, WCF