ith Evernote your notes are automatically downloaded to the local client. So long as you keep this up to date, you can use it to export notes in HTML or XML by navigating to the note you want to export, right-clicking it (or ≈- clicking), selecting Export Note and choosing your format (HTML if you want to be able to read the note yourself; XML if you just want a machine-readable backup).
It’s more complicated if you use Microsoft OneNote. Windows users can back up their notebooks from the File menu; it’s not possible on OS X. The simplest solution is to export your OneNote notes as PDFs by picking ‘Save as PDF’ from the File menu.
If you do still want to grab a copy of the original data, it’s cached on your Mac as it passes from the server to OneNote, at ~/library/ Containers/com.microsoft.onenote. mac/Data/Library/Application Support/Microsoft User Data/ OneNote/15.0/ OneNoteOfflineCache_Files/ (~ denotes your user folder).
The files are hidden, so if you haven’t set OS X to show hidden files, launch Terminal (in Utilities) and enter ’defaults write com.apple.finder AppleShowAllFiles YES’ (without quotes), hit ® , right-click the Finder on the Dock and hit ‘Refresh’.
Evernote exports HTML an XML versions of your notes by right-clicking them.
The simplest way to create a backup of your OneNote documents is to export them as PDFs.