Gagan Deep Singh

Saurabh

Allows you to add shortcodes in WordPress Navigation Menus so that you can generate links dynamically. Also allows you to add full fledged HTML sections to navigation menus.
Usage
See the <a href="#screenshots" rel="nofollow ugc">screenshots</a>.
Also, see a <a href="https://wordpress.org/support/topic/how-does-it-work-24/page/2/#post-4987738" rel="ugc">great tutorial</a> by Aurovrata Venet
Special Thanks To
<ul>
<li><a href="https://wordpress.org/support/profile/aurovrata" rel="ugc">Aurovrata Venet</a> for <a href="https://wordpress.org/support/topic/how-does-it-work-24/page/2/#post-4987738" rel="ugc">this great tutorial</a>.</li>
<li><a href="https://wordpress.org/support/profile/leewillis77" rel="ugc">Lee Willis</a> for finding out and helping in resolving <a href="https://wordpress.org/support/topic/causes-urls-to-be-amended-in-undesired-ways" rel="ugc">this bug</a>.</li>
<li><a href="https://wordpress.org/support/users/dhunink/" rel="ugc">Dennis Hunink</a> for reporting <a href="https://wordpress.org/support/?p=10325305" rel="ugc">this bug</a>.</li>
<li><a href="https://wordpress.org/support/users/hbwarper/" rel="ugc">@hbwarper</a> for providing a patch to Dennis’ issue.</li>
</ul>

Shortcode in Menus

Allows you to add shortcodes in WordPress Navigation Menus.

alastairbrayne

Create custom menu items with links relative to the root url of the current wordpress installation.
Simply add a custom link as normal with the url prefixed by %ROOT%. e.g. to get http://mydomain.com/wp/myCustomPage if your wordpress lives at http://mydomain.com/wp then you just write %ROOT%/myCustomPage for your link url.
<h3>Relative Menu Item</h3>
Create custom menu items with links relative to the wordpress root url.
<h3>Important Notes</h3>
Not tested with multisite installations.

Relative Menu Item Plugin

Create custom menu items with links relative to the root url of the current wordpress installation.

Shortcode in Menus vs Relative Menu Item Plugin