filmmaker3000

The Snippets SE WordPress plugin allows you to create variables that render as different text on your site. You could use {{phone}} to display your company\’s phone number across your site, and only have to change it in 1 place. Make your own variables and customize them to do things!
Check out the <a href="https://github.com/kangaskahn/snippets-se" rel="nofollow ugc">github repo</a> for more information.

Snippets SE

Use custom {{variables}} across your site to display and manage information in multiple places.

Alex Prokopenko / JustCoded

This plugin allow you to create simple text variables (single/multi-line) to use them in your theme templates after that. 
Once you added at least one variable, a new page called Theme Variables will appear under the Appearance menu. 
You can move all your text data (like copyright text, phone numbers, address etc.) to variables. 
So if the final client wants to change this text, he can do this easily as admin without editing the template.
This project is also available on github.com: 
https://github.com/aprokopenko/justvariables.
You can post issues, bugs and your suggestion in Issues tracker there.

Just Variables

This plugin allow you to create simple text variables (single/multi-line) to use them in your theme templates after that.

Snippets SE vs Just Variables