Submenu autopopulates any nav menu page item with its children and allows to put menus, or portion of menus, anywhere in your site.

jessejd

Enhanced Custom Menu

This plugin alters the custom menu auto-add function allowing subpages and delete menu item after un-publishing a page.

tomi33

Tomi Menu

Automatically adds sub pages to the correct menu (if enabled) when the page created/edited and removes pages from their old menu when they should be r …

Gecka

PHP 5 required. Please be sure to check your PHP version before marking the plugin as broken.
Submenu enhances the WordPress 3.x navigation system. When you have a website based on WordPress with a lot of pages, but you need a custom menu, it can be tedious to have to add a menu entry for each page created. Submenu just does it automatically.
Submenu also allows you to put menus or portion of menus anywhere in your site: sidebar, templates or page contents.
Languages available: english, french
Contribute: <a href="https://github.com/Gecka-Apps/Wordpress_Gecka_Submenu" rel="nofollow ugc">This plugin is on GitHub</a> !
<a href="http://gecka-apps.com/wordpress-plugins/gecka-submenu-pro/" title="Discover the pro version" rel="nofollow ugc">Discover the pro version</a> by checking out the <a href="http://www.youtube.com/watch?v=DHjMfD-k2Mo" rel="nofollow ugc">Gecka Submenu Pro video</a>:
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/DHjMfD-k2Mo?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>

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