Open ONE file

ONE files: what are they and how do I open them?

one file icon Are you facing difficulties opening unknown files on your computer, or wondering exactly what this file is?
We've got the information and best software solutions for opening these files effortlessly.

.one file type #1: OneNote document

With few exceptions, most .one files you encounter are actually documents from OneNote personal information management software included in the Microsoft Office / Office 365.

Further details:

Microsoft OneNote uses one file extension for years for the default document format

OneNote is a digital note-taking application from Microsoft that allows users to create notes that include text, tables, drawings, and multimedia.

The notes are saved with the .one file extension and can be shared and collaborated on with other OneNote users.

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Microsoft OneNote icon

Microsoft OneNote

Microsoft OneNote is application used to create short notes distributed with Microsoft Office suite

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Microsoft 365

A comprehensive suite of office applications and cloud-based productivity and collaboration tools

Office 365 icon

Office 365

Subscription-based service for Microsoft Office applications

Microsoft OneNote for Mac icon

Microsoft OneNote for Mac

Digital notebook app for Mac OS X

Microsoft Office for Mac icon

Microsoft Office for Mac

The latest release of Microsoft's productivity suite for Mac

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Microsoft Office

Popular and powerful office suites develeped by Microsoft

.one file type #2: docPointer visual readme document

Files with one file extension can also be found as readme files for docPointer program.

Further details:

The one file extension is also used by docPointer, a software used to visualize documents and web sites using graphics and links, available for Windows.

The .one file contains readme information in text form.

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A visual readme software

.one file type #3: EdgeCAM licensing data file

Files with one extension might also be found as license data for EdgeCAM program.

Further details:

File extension one is also related to EdgeCAM software and used for files that contain licensing data. Edgecam is a computer aided manufacturing software for NC part programming

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A CAM system used to programming milling, turning and mill-turn machines

What is the meaning of a file extension?

File extensions are characters that appear after the dot in a computer file's name. For example, the file "" has the file extension "one". This is used to identify which program should open the file or what file type it is.
File extensions help you organize and manage files. They provide a quick and easy way to identify and associate the file type with the appropriate software.

We can help you open your file

In our database, we have collected a huge number of different file extensions, detailed descriptions, and programs that can be used to open or otherwise work with the file extensions listed in our database.
This database is an invaluable resource for users who want to understand better file extensions and what they can do with them. It also allows users to know different file types with the same purpose.

Only verified software links are provided

We have verified every software listed in our database. The software listed in our database includes links to the developer's or software's website. These links should allow you to download the right program for each file type. Using verified software from reputable sources helps minimize the risk of malware and viruses infecting your computer.