Excellent!

This plugin does exactly what it claims to do.
Some might not be satisfied because it just gives the versions that the plugins page mention as compatible (compatibility info). It is true that the older plugins which were tested with earlier versions of WP might work with later WP versions too.
But think of this situation: If you have many plugins on a Multisite and come across a problem, this might actually help in identifying the culprit.
In fact, a few months ago, I had suggested this functionality be incorporated in WordPress itself.
Excellent Job!!
I suggest the author try converting this into a MU-Plugin.