Extension	File Type Developer	File Category	File Type Description	Software	Software Developer
.ATOMSVC	Microsoft Corporation	Data Files	Atom Service Document	Microsoft Excel	Microsoft Corporation
.ATT	Unknown Developer	Web Files	Web Form Post Data File	Microsoft Notepad	Microsoft Corporation
.AU	Open Source	Audio Files	Audacity Audio File	Microsoft Windows Media Player	Microsoft Corporation
.AVB	Avid Technology	Video Files	Avid Bin File	Microsoft Comic Chat	Microsoft Corporation
.AVI	Microsoft Corporation	Video Files	Audio Video Interleave File	Microsoft Windows Media Player	Microsoft Corporation
.AVS	Adobe Systems Incorporated	Data Files	Adobe Photoshop Variations File	Microsoft Notepad	Microsoft Corporation
.AW	Microsoft Corporation	Data Files	Answer Wizard File	Microsoft Excel	Microsoft Corporation
.AWX	ESRI	GIS Files	ArcIMS XML Project File	Microsoft DirectX	Microsoft Corporation
.AX	Open Source	Plugin Files	DirectShow Filter	Microsoft Windows Media Player	Microsoft Corporation
.AXC	Microsoft Corporation	Settings Files	Microsoft Dynamics AX Configuration	Microsoft Dynamics AX	Microsoft Corporation
.AXD	Microsoft Corporation	Web Files	ASP.NET Web Handler File	Microsoft Notepad	Microsoft Corporation
.AXE	Microsoft Corporation	GIS Files	AutoRoute Map File	Microsoft AutoRoute	Microsoft Corporation
.AXL	Wattle Software	Data Files	XML File	Microsoft Word	Microsoft Corporation
.AXS	Microsoft Corporation	Developer Files	ActiveX Script File	Microsoft Notepad	Microsoft Corporation
.AXT	Adobe Systems Incorporated	Settings Files	Adobe Photoshop Extract File	Microsoft AutoRoute	Microsoft Corporation

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