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U3P File - What is it and how do I open it?
The .u3p file extension is most commonly associated with U3 Smart Drive software. U3 Smart Drives are a type o ...

UCCAPILOG File - What is it and how do I open it?
The .uccapilog file extension is used by the Windows Live Messenger IM application. The Windows Live Messenger ...

UNDEFINED File - What is it and how do I open it?
The .undefined file extension is used for various file formats that cannot be recognized by the system. Some f ...

UNITY3D File - What is it and how do I open it?
UNITY3D files are archives of different game data files and game asset files used in creating and playing 3D g ...

UNKNOWN File - What is it and how do I open it?
The .unknown file extension is often used by some data recovery tools for flagging files that have not been co ...

UPD File - What is it and how do I open it?
Files that contain the .upd file extension are normally associated with software update files. The UPD files t ...

UPG File - What is it and how do I open it?
Files that contain the .upg file extension are most commonly associated with firmware upgrade files. These UPG ...

URL File - What is it and how do I open it?
Files with the .url extension contain Internet shortcuts that are used by a variety of Web browsing applicatio ...

USER File - What is it and how do I open it?
The .user file extension is most commonly associated with the Visual Studio software application. Visual Studi ...

UUE File - What is it and how do I open it?
Files that contain the .uue file extension most commonly hold uuencoded Unix files. The word "uuencoded&q ...

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