Michael Dahlke

You (the project manager or WP admin) are constantly needing to tell your developer that you added/updated/removed a plugin 
on the live site so he can keep his dev environment semi-synced. This eliminates that need, by just shooting them an email 
with the plugin information and what happened.

Plugin Notifier

Automatically alert your developer when you install/update/remove a plugin.

Adam Ainsworth

Sometimes newer isn’t always better.
You won’t always want to update a given plugin. Perhaps the design has been changed, or a bug has been introduced. Maybe it has been taken over by someone new and they’ve added loads of obnoxious ads or other sneaky monetisation methods. Or perhaps you just like it the way it is.
However, WP keeps telling you there’s a new version available, and lists it along with other plugins which you may actually want to update.
What happens if you accidentally update? At best, it’s a tedious downgrade process, at worst it may completely mess up the data that the plugin was using. In any case, it’s a pain and there’s no ignore update function in WP.
Until now!
IMPORTANT – You should only leave a plugin updated if you know what you are doing, familiar with the risks and willing to accept the consequences should an unpatched vulnerability be exploited on your site.
The plugin author cannot be held responsible for any loss or damages that occur as a result of using this plugin to disregard software updates!

Newer Not Better

Prevents selected plugins bugging you about updates

Plugin Notifier vs Newer Not Better