---
description: "Learn more about: COM Modules Classes"
title: "COM Modules Classes (ATL)"
ms.date: "11/04/2016"
ms.topic: "reference"
helpviewer_keywords: ["COM modules classes"]
ms.assetid: 0a8a82dd-a153-47cd-9bbe-1a1ad5d1a6ff
---
# COM Modules Classes

The following classes provide support for a COM module:

- [CAtlBaseModule](../atl/reference/catlbasemodule-class.md) This class is instantiated in every ATL project.

- [CAtlComModule](../atl/reference/catlcommodule-class.md) This class implements a COM server module.

- [CAtlModule](../atl/reference/catlmodule-class.md) This class provides methods used by several ATL module classes.

- [CAtlModuleT](../atl/reference/catlmodulet-class.md) This class implements an ATL module.

- [CAtlExeModuleT](../atl/reference/catlexemodulet-class.md) This class represents the module for an application.

- [CAtlServiceModuleT](../atl/reference/catlservicemodulet-class.md) This class implements a service.

- [CAtlWinModule](../atl/reference/catlwinmodule-class.md) This class provides support for ATL windowing components.

- [CComModule](../atl/reference/ccommodule-class.md) This class implements a DLL or EXE module. Obsolete in ATL 7.0.

- [CComAutoThreadModule](../atl/reference/ccomautothreadmodule-class.md) This class implements an EXE module, with support for multiple thread-pooled apartments. Obsolete in ATL 7.0.

## Related Articles

[ATL Module Classes](../atl/atl-module-classes.md)

## See also

[Class Overview](../atl/atl-class-overview.md)<br/>
[Module Classes](../atl/atl-module-classes.md)