azurecurve

Checks comment to ensure they are longer than the minimum, shorter than the maximum and also allows comments to be forced into moderation based on length.
This plugin is multisite compatible; each site can be set to use network settings or locally defined ones.
This plugin supports language translations. If you want to translate this plugin please sent the .po and .mo files to wordpress.translations@azurecurve.co.uk for inclusion in the next version (full credit will be given). The .pot fie is in the languages folder of the plugin and can also be downloaded from the plugin page on http://development.azurecurve.co.uk.

azurecurve Comment Validator

Checks comment to ensure they are longer than the minimum, shorter than the maximum and also allows comments to be forced into moderation based on len …

tyfdesign

When activated, this plugin: 
1. Closes comments and pings on all existing public content (posts, pages, and custom post types). 
2. Sets WordPress defaults to disallow new comments and pings on all future content. 
3. Ensures that newly created or updated posts remain closed to comments. 
4. Hides the default Comments menu in the admin sidebar when enabled. 
5. Provides a simple Settings page with a single Activate / Deactivate button to toggle behavior.
When deactivated, the plugin restores the default WordPress discussion settings without reopening previously closed comments.
Created by TYF Design.

Do Not Allow Comments Everywhere

A lightweight plugin that globally disables comments and pings across all WordPress content - past and future.

azurecurve Comment Validator vs Do Not Allow Comments Everywhere