CantonBolo

Features: 
1. In addition to the jQuery library, only need to load some little JS files and some little of CSS files. 
2. The output code of the plug-in on the page in line with W3C’s XHTML 1.1 and CSS 3 standards, and the code structure is very simple. 
3. When deactivated，the images calling code generated by the plug-in will not cause any adverse effects.
This plugin allows you easily to make <a href="http://flowplayer.org/tools/demos/overlay/gallery.html" rel="nofollow ugc">Overlay gallery</a> popups on WordPress.
这个插件助你在 WordPress 中轻易地使用 <a href="http://flowplayer.org/tools/demos/overlay/gallery.html" rel="nofollow ugc">Overlay gallery</a> 相册功能。
<h4>Supported Languages:</h4>
<ul>
<li>US English/en_US (default)</li>
<li>简体中文/zh_CN (translate by <a href="http://imbolo.com/" rel="nofollow ugc">bolo</a>)</li>
</ul>

Overlay4WP

Easy to use Overlay popus gallery in WordPress.Base on jQuery Library.

ronchiluca

Eco Mode displays a soft overlay on pages that have been inactive for a configurable amount of time. The overlay can lower power draw on OLED/AMOLED screens, reduce visual fatigue, and act as a gentle reminder to visitors who have walked away from their screen.
Key features
<ul>
<li>Configurable idle time from 15 seconds up to 1 hour.</li>
<li>Adjustable overlay opacity (70–100%).</li>
<li>Optional logo display.</li>
<li>Smart return-from-hidden behavior: require an explicit click or scroll before the overlay dismisses, useful on multi-tab sessions.</li>
<li>Works with the most common browsers (Chrome, Edge, Firefox, Safari) and handles the back-forward cache.</li>
<li>Throttled event handling keeps the overlay lightweight.</li>
<li>Accessible: ARIA dialog role, focus trap on the resume button, keyboard support (Enter, Space, Escape).</li>
<li>Five built-in languages (English, Italian, French, German, Spanish) with per-language custom messages.</li>
<li>Exclude specific URL paths or CSS selectors from triggering the overlay.</li>
<li>WooCommerce aware: cart, checkout, and account pages are skipped by default.</li>
<li>Mobile-aware: disabled by default on phones.</li>
<li>Respects <code>prefers-reduced-motion</code>.</li>
<li>Optional console debug mode to verify timer, activity events, and overlay lifecycle.</li>
<li>No visitor tracking; only aggregate overlay impressions are counted locally in WordPress.</li>
</ul>
For developers
Two filters are provided for advanced customization:
<ul>
<li><code>eco_mode_should_run</code> — return <code>false</code> to disable the overlay for the current request.</li>
<li><code>eco_mode_frontend_config</code> — modify the configuration object passed to the frontend script.</li>
</ul>
A note on energy savings
Dark pixels consume less power only on OLED/AMOLED screens. On traditional LCD monitors the backlight is constant and the energy saving is negligible. Eco Mode also reduces visual load and lets the visitor know the session has been idle.

Eco Mode

Dim inactive sessions with a configurable, accessible overlay — lowers visual energy on OLED screens and nudges focused browsing.

Overlay4WP vs Eco Mode