Oftentimes I'll want to put remaps in my .vimrc that use plugin commands. When a plugin happens to not be installed, these remaps will result in errors. A simple workaround would be to put an if-statement around plugin-specific remaps that checks whether that plugin has been activated.

How can I do this with VimPlug? Does VimPlug store a list somewhere?

Edit, to clarify things: I need an actual list or a string, not the panel that :PlugStatus brings up. For example: with a list of activated plugins, any remaps specific to the plugin plugin_name would be wrapped in this if statement:

if index(plugin_list, 'plugin_name') != -1
  <special remaps here>
endif

The index command returns -1 if the string 'plugin_name' is not contained in the list plugin_list.