Annika Backstrom

The “Who’s Online” sidebar widget shows a list of recently-active 
blog users. It has been built with Automattic’s <a href="http://p2theme.com/" rel="nofollow ugc">P2 
theme</a> in mind, but does not depend on P2 
functionality.
The most recently active users bubble up to the top. After one week, 
users fall off the bottom of the list and are hidden until they return. 
As of this writing the list does not support live sorting; the user 
order is fixed, and users missing from the list due to inactivity will 
be added to the top if they come online.

Works as expected

Who's reading your P2 blog right now? Keep track.

Timi Wahalahti

This plugin allows you to set deadline for posts and list posts with upcoming deadlines via shortcode.
Plugin is intended to be used with <a href="https://p2theme.com/" rel="nofollow ugc">P2 theme</a> or <a href="https://geto2.com/" rel="nofollow ugc">o2 plugin</a>, but can also work without it – only P2/o2 spesific functionality is datepicker field added to frontend post submit area. Datepicker for setting deadline is also available in classic editor and Gutenberg.
Plugin also automatically adds deadline to the end of <code>the_content</code> output if deadline is set. List of posts with upcoming deadlines are cached to transients to reduce amount of databse queries in large scale sites.

Post Deadlines

As old as this plugin it is, it still works just as expected on latest version of WordPress and P2 :)

Works like a charm

Simple plugin to add deadlines for posts and list posts with upcoming deadlines. Can be used as standalone or with P2 or o2.

Who's Online vs Post Deadlines