ArcGIS Item Information tool is a free tool by ESRI which provides an interface designed to easily manage your ArcGIS Online content tags and you do not need to be an administrator to access.
ESRI has made some changes to the ArcGIS Online platform. One is an account name change and another is new account option. The ArcGIS Online personal account is now referred to as a public account. Additionally, a new account option has been created; this is referred to as an organization account. This requires a paid for subscription to ArcGIS Online for Organizations.