Jan Štětina

This plugin shows which user has access to which posts under Users administration menu. 
User names are in columns so it is suitable only for smaller counts. Works only in conjunction with User Access Manager and requires PHP 5.3.
It was developed only as helper tool for another plugin which I am going to create in near future and I guess it can be helpful if you are interested how User Access Manager works. Plugin code is (or tries to be) well documented.
This plugin will probably not be updated any further. I provide no guarantees whatsoever.

Post Access Overview

Show who has access to which post in a single table. Works in conjunction with User Access Manager.

peti446

With this Plugin you can display project related changelogs on your WordPress Site with some nice and simple animations.
This could be very useful, if you want to make the user aware of each version changes and/or you have serveral project to display either on the same page or in different ones!.

Simple App Changelogs

A Plugin to display a Changelog from an App, Plugin or anything else of what you want to have a changelog off!.

Post Access Overview vs Simple App Changelogs