tradesouthwest

Create a basic yet stylable directory type listing with custom categories. All field names can be changed to fit the purpose of your website. Fields are by default named Country, Address, State, City, ZipCode, Phone, Email, Website and Other. Map included for each listing and uses the Address and Zip Code fields to calculate the location. Simply add a google Maps API key into the control panel and away you go.
Supports a Featured Image that shows in main page listings and on archive and single lists. Other images can be added in the standard editor so lister has full control of images and can even create a gallery. Supports Comments and uses theme comment form. Supports Excerpts. Set number of listings on a page. Set number of characters on excerpt. Set text for ‘read more’ link. Includes default categories for all USA States that can be enabled. (Listings Categories can be anything… food, music, plays. OnList only provides the states since most use this type of plugin for listing by locations.) Set size of maps box. Also has a before and after content editor so you can make the OnList meld with your current theme. Includes two shortcodes, one to list the main page and another to create a Categories page with. Category Widget can be added to any sidebar and this plugin supports nav menu entries.
Please note: You must have a google Maps API Key for Maps to work. (See Q. and A. below) 
Custom theme available upon request. 
Demo at: <a href="https://tradesouthwest.com/onlist" rel="nofollow ugc">Demo link</a>
<h3>Features</h3>
<ul>
<li>Most basic of settings to start a directory, with little to none configuration.</li>
<li>Custom meta data for every listing.</li>
<li>Categories can be added.</li>
<li>USA States are included but can be excluded as categories.</li>
<li>Only two fields: Address and Zipcode is all that is needed to show map.</li>
<li>Set size of map box on page.</li>
<li>Add any label to field “Other” to fit. (Specialist In, UPC, Certification Number, etc.)</li>
<li>Change any field name to make OnList versatile.</li>
<li>Before and After Content widgets included.</li>
<li>Supports comments.</li>
<li>Supports Featured Image.</li>
<li>Supports Excerpts.</li>
</ul>

OnList

Fast and easy setup to get online listing site or directory started.

HivePress

HivePress Messages is an extension for <a href="https://wordpress.org/plugins/hivepress/" rel="ugc">HivePress</a> plugin. It allows users to send private messages.
<a href="https://listinghive.hivepress.io/" rel="nofollow ugc">Demo</a> | <a href="https://help.hivepress.io/" rel="nofollow ugc">Docs</a> | <a href="https://community.hivepress.io/" rel="nofollow ugc">Support</a>

OnList vs HivePress Messages