Reddit User Explorer
This Extension displays past posts and comments of Reddit Users. Once installed it can be used by pressing Ctrl + Left Click on a Reddit username. The Reddit User Explorer will fetch via the Reddit API all the available past posts and comments of the selected user. It will then display them in a new tab that will be opened automatically once the gathering is completed. Please note that since Reddit allows only for one request per second it can take up to some seconds until all past posts and comments are gathered.