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PLX Multi-Environments manages separate Development, Staging, and Production environments directly from within the WordPress Admin screen.
Once the separate configuration files have been installed and your existing wp-config.php settings have been backed up 
you\’re then free to enter each of your environments database settings. When you push your files between servers you no 
longer need to edit the configuration.
Important: Although the plugin will automatically backup your current settings to wp-config.backup.php, we strongly recommend backing up 
your wp-config.php file before completing the plugin installation.

PLX Multi-Environments

Manage separate Development, Staging, and Production environments directly from the Wordpress Admin screen.

vmassuchetto

This is a plugin for managing website releases under production or development 
environments. Once the WordPress installation is in a Git tree, WP Deploy will 
detect its branches and put a switch menu in the admin bar.
Like this, you can just push your website to your remote and use the menu to 
deploy the changes without using Git hooks or prompting into another shell.
Another useful purpose is for the development process, where different 
implementations can be viewed and switched by customers, or a production branch 
can be testes in a staging environment.

WP Git Deploy

Deploy websites using Git and the admin bar.

PLX Multi-Environments vs WP Git Deploy