What is .ONE file extension?
.ONE file extension is a known file type. This section of easyfileopener.com tells you everything you need to know about this extension.
Document created with OneNote, a note-taking program developed by Microsoft; accepts typed input as well as digitized handwriting; may also include text or objects pasted from other applications, such as images, drawings, and audio/video clips.
You can see a list of software programs here on easyfileopener.com that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.