heiglandreas

This plugin adds plugins on activation to a composer.json-file and on deactivation removes them.
That way you can handle your plugins via <a href="https://getcomposer.org" rel="nofollow ugc">composer</a>.
Plugins are added to the composer.json via <a href="https://wpackagist.org" rel="nofollow ugc">wpackagist</a> which makes the wordpress-plugin-directory available via git.
But you can also manually add plugins to the pluginlist and on activation the plugin is checked for a composer.json file and if one exists the name is used to add the plugin to the composer.json-File.

Talk to Composer

Add all your active plugins to a composer.json-File.

jamesdlow

Additional modules for live composer that can also be used as wordpress shortcodes or widgets: 
* <a></a> #anchor module for live composer

LC Widget Modules

Additional modules for live composer that can also be used as wordpress shortcodes or widgets

Talk to Composer vs LC Widget Modules