shortdark

This plugin looks at the volume of posts in each category, tag, the volume of posts per year, month, day-of-the-month, day-of-the-week, hour, author, number of words-per-post and the number of days between posts. You can specify a year and/or an author to just look at the post volume stats for that year/author. The bar and pie charts can be added to a sidebar with Post Volume Stats widget. Lists and line graphs can be exported to a new post to show the change in category, tag and custom taxonomy posts over the years. You can also export the “Compare Years” data into a CSV spreadsheet. The latest feature is the “Date Range” page which applies a date range to the data on the main page.
Please let me know if you like this plugin by <a href="https://wordpress.org/plugins/post-volume-stats/" rel="ugc">leaving a review</a>.
Go to the <a href="https://www.postvolumestats.com/" rel="nofollow ugc">Post Volume Stats website</a> for more information.
<h4>Translations</h4>
You can translate Post Volume Stats on <a href="https://translate.wordpress.org/projects/wp-plugins/post-volume-stats" rel="nofollow ugc">translate.wordpress.org</a>.

Post Volume Stats

With dozens of authors and posts per day, this plugin gives a very nice overview of who does what and when.

Very nice plugin

Shows stats for the volume of posts per year, month, day-of-the-month, day-of-the-week, hour-of-the-day, words per post, days between posts, author, c …

paleolimbot

Plot.wp enables the <code>[plotly]</code> shortcode, allowing easy inclusion of JSON-based plots using the <a href="https://plot.ly/javascript/" rel="nofollow ugc">plotly</a> API. Just add valid plotly JSON between the <code>[plotly]</code> and <code>[/plotly]</code> shortcodes, and revel as an interactive plot appears in your post.

Plot.wp

Add JSON-based plots to posts and pages using the plotly.js API

Post Volume Stats vs Plot.wp