nicksmit

AdminNotes allows administrators and editors to add formatted notes to posts and pages. These notes can serve as reminders, tasks, or recommendations for content editors. Additionally, when enabled, users are notified to read these admin notes before editing the content.
Features: 
– Add formatted notes using a rich text editor in both Classic and Gutenberg editors. 
– Display a notification message to users when editing a post or page if admin notes are present. 
– Option to enable or disable the notification on a per-post/page basis.

AdminNotes

Adds an admin notes block to post and page editing screens with formatted text support and user notifications.

cartpauj

This plugin adds a text editor area to each User Profile in the dashboard for Administrators to keep private notes about each User. The notes are ONLY visible to Administrators — that’s the whole point! It also adds a column to the “All Users” list where you can quickly see the note for the user without having to even open their profile.
It is especially handy for <a href="http://www.memberpress.com/?aff=20" title="Best membership plugin for WordPress" rel="nofollow ugc">Membership Sites</a> where you may have thousands of members to deal with and need to remember special circumstances for them.

User Notes

When you're running a Membership Software on top of WordPress and have a team of admins managing thousands of users you can lose track of what's going on with some users pretty fast. This plugin makes it dead simple to keep an internal file on people so you can see previous admin notes about them. Very important to a well functioning business.



Straight forward and super effective

Keep private notes about each of your users that only Administrators can see.

AdminNotes vs User Notes