Hervé Yvis

This lightweight plugin allow you to make sure that only posts are searched by the WordPress’s search function.
<h4>License</h4>
This program is provided under the MIT license.
Copyright (c) 2019 Hervé Yvis
Permission is hereby granted, free of charge, to any person obtaining a copy 
of this software and associated documentation files (the “Software”), to deal 
in the Software without restriction, including without limitation the rights 
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
copies of the Software, and to permit persons to whom the Software is 
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all 
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
SOFTWARE.

WP – Fix search function [search only posts]

Make sure that only posts are searched by the Wordpress's search function.

scribu

AyeCode

Stiofan

Alex Ciobica

This plugin allows you to create many-to-many relationships between posts of any type: post, page, custom etc. A few example use cases:
<ul>
<li>manually curated lists of related posts</li>
<li>post series</li>
<li>products connected to retailers</li>
<li>etc.</li>
</ul>
Additionally, you can create many-to-many relationships between posts and users. So, you could also implement:
<ul>
<li>favorite posts of users</li>
<li>multiple authors per post</li>
<li>etc.</li>
</ul>
<h4>Support & Maintenance</h4>
AyeCode Ltd have committed to security and maintenance updates due to this plugins requirement in our <a href="https://wpgeodirectory.com/downloads/list-manager/" rel="nofollow ugc">List Manager Extension.</a>
~~I, scribu, will not be offering support (either free or paid) for this plugin anymore.~~
If you want to help maintain the plugin, fork it <a href="https://github.com/scribu/wp-posts-to-posts" rel="nofollow ugc">on github</a> and open pull requests.
Links: <a href="http://github.com/scribu/wp-posts-to-posts/wiki" rel="nofollow ugc">Documentation</a> | <a href="http://scribu.net/wordpress/posts-to-posts" rel="nofollow ugc">Plugin News</a> | <a href="http://scribu.net" rel="nofollow ugc">Author’s Site</a>

Posts 2 Posts

It works great. The options are beautiful, thought for every need, for example change a label or show only "to" box.

Works great

I'm working with WordPress, after some updates or actions the plugin starts to work incorrectly. The code is completely unreadable and can not be changed, the author abandoned his creation.
You can use - https://wordpress.org/plugins/npc-neatekpostconnect/

Huge load, unreadable code, Alternative for that plugin

Efficient many-to-many connections between posts, pages, custom post types, users.

WP – Fix search function [search only posts] vs Posts 2 Posts