smal

A plugin to add custom jQuery effects. You can also activate multiple effects at the same time.
Effects currently present: 
1. Snow: a simple effect to make it snow on the site and make the snow pile up at the bottom, also placing a couple of snowmen in the corners of the screen; 
2. Background-changer: you can change the background of the site randomly with images present in the plugin; 
3. Santa Claus: make Santa Claus pass through the bottom of the screen with a wave-like motion; 
4. Befana: make the Befana pass through the top of the screen with a wave-like motion; 
5. Karaoke: scroll the lyrics of the song “Santa Clause is coming to town” with a karaoke effect; 
6. Valentine’s Day: a simple word “Love” with a little heart to make appear on Valentine’s Day.
Other effects will be added in the next versions in progress.
Italiano: 
Un plugin per aggiungere effetti jQuery personalizzati. Puoi anche attivare più effetti contemporaneamente.
Effetti attualmente presenti: 
1. Neve: un semplice effetto per far nevicare sul sito e far accumulare la neve in basso, posizionando anche un paio di pupazzi di neve negli angoli dello schermo; 
2. Cambia-sfondo: puoi cambiare lo sfondo del sito in modo casuale con le immagini presenti nel plugin; 
3. Babbo Natale: fai passare Babbo Natale nella parte inferiore dello schermo con un movimento ondulatorio; 
4. Befana: fai passare la Befana nella parte superiore dello schermo con un movimento ondulatorio; 
5. Karaoke: fai scorrere il testo della canzone “Santa Clause is coming to town” con un effetto karaoke; 
6. San Valentino: una semplice parola “Love” con un cuoricino da far apparire il giorno di San Valentino.
Altri effetti saranno aggiunti nelle prossime versioni in corso.

jQ Enchanter

Good

Enable jQuery effects with On/Off switch from admin panel.

Ramoonus

This plugin updates <a href="http://jquery.com/" rel="nofollow ugc">jQuery</a> to the latest official stable version, which is most likely not available within the latest stable release of WordPress. 
jQuery Migrate is also included for backwards compatibility.
No files are replaced, therefore deactivation of this plugin returns your site to it`s original state.
Since WordPress 5.6 includes an up-to-date version of jQuery 3, upgrading shouldn’t`t be necessary in most cases.
Warning
If you are not familiar with beta testing, bugfixing, javascript or running bleeding edge software it`s not recommended. 
I will not provide help on JavaScript and jQuery, only on plugin related issues (PHP)!
Reporting problems
Please post bug reports and request for help on <a href="https://wordpress.org/support/plugin/jquery-updater" rel="ugc">WordPress.org Support Forums</a>.
If you run into any bugs, turning this plugin off will fully deactivate everything.
Work in Progress
<ul>
<li>Options screen to enable/disable</li>
<li>Option to choose a specific jQuery version</li>
<li>Automatic cache flushing</li>
</ul>
For more information on the development visit the plugins <a href="https://github.com/Ramoonus/jQuery-Updater/issues" rel="nofollow ugc">GitHub</a>

jQuery Updater

Simple plugin

This plugin updates jQuery to the latest stable version on your website.

jQ Enchanter vs jQuery Updater