A package installer identifies a utility tool that is capable of opening a file attempted by a user based on metadata downloaded from a remote server, where the metadata includes information identifying one or more packages available for download from the remote server, including mime types of files that the one or more packages support. A graphical user interface (GUI) is displayed to the user prompting whether the user desires to install the identified utility tool. In response to an input from the user via the GUI, the package installer downloads a package associated with the identified utility tool from the remote server for local installation.