There are 4 other file types using
the U file extension!

empty icon.u - Subsampled raw YUV bitmap image

empty icon.u - Unreal application pack

empty icon.u - AU audio

empty icon.u - Unreal Tournament game data

U file extension - Nitpicker IP flow file

What is u file? How to open u files?

File type specification:

Various data file type icon Various data file type

The U file extension is associated with Nitpicker, a program for gathering internet traffic information. An *.u file contains saved IP flow. 

The default software associated to open u file:

Nitpicker  Linux/Unix software

Nitpicker is used to gather info about Internet Traffic (IP). t is designed for the berkley packet filter (BPF).

Help how to open:

Due the variability and uncertainty of this file type group, there is no general information available, about how to open this various data file format. However most files with extension from this group are usually not meant to be opened or viewed directly. If there are associated applications or programs listed below the extension description, you can always try to check their website for additional informations on their forums or other type of customer support.

For general information try to look at:
Identifying unknown file formats

How to convert:

Due the variability and uncertainty of this file type group, there is no general information available, about how to convert this various data file format. However most files with extension from this group are usually not in formats, which can be converted. If there are associated applications or programs listed below the extension description, you can always try to check their website for additional informations on their forums or other type of customer support.

List of recommended software applications associated to the .u file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open u file, edit u file, convert u file, view u file, play u file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with u file - Nitpicker IP flow file

Click on the software link for more information about Nitpicker. Nitpicker uses u file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Linux/Unix:

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