lukaiser

ILAnnotations allows you to select a text in a blog post and add your comment to it. 
The plugin uses the standard comments engine of WordPress, so all other comment plugins should work just fine with it. 
Shortcodes are used to mark the highlighted text. This allows you to still edit a post and move stuff around without losing the annotations.

ILAnnotations

Annotate any text in a blog post and add a comment to it.

creativeboat

Boat Notes Lite adds a beautiful floating sticky-notes widget to your WordPress posts and pages. Logged-in users can create, edit, and delete color-coded notes directly on any page — no page reloads, no friction.
All notes are stored as a custom post type (<code>boat_note</code>) so they live in your database like regular content and survive plugin updates cleanly.
<h4>Free features</h4>
<ul>
<li>Floating widget — a subtle button appears on every enabled post/page. Click it to open the notes panel.</li>
<li>5 pastel colors — Yellow, Peach, Green, Blue, and Pink.</li>
<li>Full CRUD — Create, edit, and delete notes with instant REST API saves.</li>
<li>Notes board — shortcode <code>[boat_notes_board]</code> and a Gutenberg block to display all your notes on any page.</li>
<li>Trash & restore — accidentally deleted a note? Restore it from the trash tab.</li>
<li>20 note fonts — choose from 20 Google Fonts for your note text.</li>
<li>8 UI fonts — apply any of 8 Google Fonts to the widget interface.</li>
<li>Custom colors — pick your own button color, hover color, icon color, and badge color.</li>
<li>Button position — dock the widget to the bottom-left or bottom-right corner.</li>
<li>12 preset icons — choose from a curated set of Dashicons for the widget button.</li>
<li>Board customization — set a title, description, and choose whether to show the icon.</li>
<li>GDPR ready — full personal data export and erasure via the WordPress privacy tools.</li>
<li>Zero dependencies — no jQuery UI, no external libraries beyond Google Fonts.</li>
<li>Clean uninstall — removes all data when you delete the plugin.</li>
</ul>
<h4>Upgrade to Boat Notes Pro</h4>
The free version is generous, but <a href="https://profiles.wordpress.org/creativeboat/" rel="nofollow ugc">Boat Notes Pro</a> adds the features power users need:
<ul>
<li>4 note themes — Classic, Notebook, Torn Paper, and Minimal.</li>
<li>6 background patterns — Dots, Grid, Lines, Diagonal, Crosshatch, and None.</li>
<li>Dark mode & auto mode — Light, Dark, or follow the user’s system preference.</li>
<li>Custom SVG icon — upload your own SVG for a fully branded experience.</li>
<li>Role-based permissions — choose exactly which WordPress roles can create and read notes.</li>
<li>Board filters — let users filter notes by color, date, post type, or author.</li>
<li>Analytics dashboard — see note activity, top pages, most active users, and color distribution at a glance.</li>
</ul>
<h4>How it works</h4>
<ol>
<li>Install and activate the plugin.</li>
<li>Go to Settings → Boat Notes to configure colors, fonts, and the board page.</li>
<li>A floating button will appear on all posts and pages for logged-in users.</li>
<li>Click the button to open the notes panel and start writing.</li>
<li>Place the <code>[boat_notes_board]</code> shortcode or the Boat Notes Board Gutenberg block on any page to show all your notes in one place.</li>
</ol>
<h4>Privacy</h4>
Boat Notes Lite stores notes as WordPress custom post types attributed to the logged-in user. It supports WordPress’s built-in Personal Data Export and Personal Data Erasure tools under Tools → Erase Personal Data.
No data is sent to external servers. Google Fonts are loaded from Google’s CDN for the font picker preview — if you prefer self-hosted fonts, you can dequeue the stylesheet and use the Pro version’s custom font stack support.

Boat Notes Lite

Add a floating sticky-notes widget to any page or post. Let your team annotate content with color-coded notes — right inside WordPress.

ILAnnotations vs Boat Notes Lite