theode

If too many plugins appear in the WordPress admin sometimes the question appear if there is a way to move them out of sight without deleting them. 
This plugin is able to do this task. 
Define a folder under Tools -> Plugin Mover and then go to plugins admin page and choose to move plugins to your defined folder. 
Afterwards you can see them by ftp in the defined folder.

Plugin Mover

Easily move your plugins into another folder!

scribu

This plugin is outdated. Use <a href="https://wordpress.org/extend/plugins/term-management-tools/" rel="ugc">Term Management Tools</a> instead.

Merge Tags

Adds a new form on the tag management screen that lets you merge and replace tags and categories.

Plugin Mover vs Merge Tags