I am using QGIS 2.8.1. I have installed the OpenLayers Plug, however it is not showing up in my list of plugins. I confirmed it's installed in the plugin manager.
Is anyone else having this issue?
I suppose you are running Qgis 2.8.1.
The openlayers plugin has nothing to do with the JavaScript library Openlayers 2 or 3 !
Anyway to access this plugin in Qgis, you should go the tab 'Internet' and it shoud be there !
./qgis2/python/plugins/openlayers_plugin/weblayers/html
folder.