Ederson Peka

This plugin adds a checkbox to the default comment form, allowing the commenter to restrict his comment’s exhibition only to site owners.

Private Comment

Allow commenters to choose restrict their comments exhibition only to site owners

mojowill

Easily create a “Coming Soon” page for your WordPress site. Perfect for hiding your development of a site on a live server from the world.
This is a fork of an original plugin by Jeremy Massel (https://wordpress.org/plugins/underconstruction/), which unfortunately was passed onto a new developer who felt the need to bombard users with advertising messages! This version is clean and not ad supported!

Mojo Under Construction

Easily create a "Coming Soon" page for your WordPress site.

Private Comment vs Mojo Under Construction