Lee Willis

An easy-to-use plugin that allows you to change translatable strings from plugins / themes and WordPress core without editing code. Simply enter the current string, and what you want to replace it with and the plugin will automatically do the rest!
The plugin’s available for forking and contribution over on <a href="https://github.com/leewillis77/say-what" rel="nofollow ugc">GitHub</a>
Check out <a href="https://plugins.leewillis.co.uk/downloads/say-what-pro/" rel="nofollow ugc">Say What Pro</a> for:
<ul>
<li>String Discovery and autocomplete – find the strings you need without diving through code. Works with server-side and Javascript-rendered strings</li>
<li>Improved performance using text-domain-specific filters</li>
<li>Wildcard string replacements – replace individual words, or fragments across your whole site</li>
<li>Multi-lingual support – set different replacements for different languages on multi-lingual sites</li>
<li>Import/export features – Easy import/export of replacements through the user interface</li>
</ul>
<h3>Support this free plugin</h3>
As a business, we already donate a percentage of our profits from premium plugins to global climate change projects. You’re free to use this plugin free of charge, but if you do, please consider <a href="https://ecologi.com/ademtisoftware?gift-trees&r=ademtisoftware" rel="nofollow ugc">buying the world some trees</a> in return. You’ll be creating employment for local families and restoring wildlife habitats.

Say What?

An easy-to-use plugin that allows you to change translatable strings from plugins / themes and WordPress core without editing code.

hauxh

This plugin allows you to require a secret key that is passed via the URL: http://example.com/post-title/?key=[string] 
Specify the key in a custom value called “key” with the [string] or use the built in widget.
Stable version of the plugin are pushed to the WordPress repository, 
but the latest version of the plugin can be found at: 
https://bitbucket.org/excion/wpkeyme/
Issues/Bugs: https://bitbucket.org/excion/wpkeyme/issues

WPKeyMe

This plugin allows you to require a secret key that is passed via the URL: http://example.com/post-title/?key=[string]

Say What? vs WPKeyMe