Milan Dinić

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Don’t want to publish all of your posts at once but hate manual scheduling/rescheduling? Post to Queue comes as a solution. You just put posts to queue and they’ll be published automatically when chosen time passes since last published post of that post type. It’s even possible to choose days of the week and hours of the day when those posts will be published.
Post to Queue is like Buffer for WordPress, just better.
It requires that cron runs regularly to be able to publish posts on time.
Post to Queue code is partly based on a code from plugin <a href="https://wordpress.org/plugins/automatic-post-scheduler/" rel="ugc">Automatic Post Scheduler</a> by <a href="http://tudorsandu.ro/" rel="nofollow ugc">Tudor Sandu</a> and a code from plugin <a href="https://wordpress.org/plugins/metronet-reorder-posts/" rel="ugc">Metronet Reorder Posts</a> by <a href="http://www.ronalfy.com/" rel="nofollow ugc">Ronald Huereca</a> and <a href="https://geek.hellyer.kiwi/" rel="nofollow ugc">Ryan Hellyer</a> for <a href="http://www.metronet.no/" rel="nofollow ugc">Metronet Norge AS</a>.
And it’s on <a href="https://github.com/dimadin/post-to-queue" rel="nofollow ugc">GitHub</a>.

Post to Queue

Stack posts to queue and auto publish them in chosen interval and time frame.

alxuta

By using this plugin you’ll be able to allow only a specific number of visitors to navigate through your website. 
The extra influx of visitors will be kept in a virtual queue until a new space will be available.
You could always use the following shortcode [virtual-queue-position], in order to display the current user position into the queue.
Installation
<ol>
<li>Upload the <code>virtual-queue</code> directory to the <code>/wp-content/plugins/</code> directory</li>
<li>Activate the plugin through the ‘Plugins’ menu in WordPress</li>
<li>Update the plugin settings</li>
<li>Set a Cron Job that will access the link https://domain.com/virtual-queue/maintenance/ where domain.com is your own domain name.</li>
<li>Go to Settings -> Permalinks / Permalink Settings and click Save Changes</li>
</ol>

Virtual Queue

By using this plugin you'll be able to allow only a specific number of visitors to navigate through your website.

Post to Queue vs Virtual Queue