Driver Agent will scan the entire computer, checking the drivers of all the peripherals that are connected to it, as well as the drivers for those peripherals that have been connected previously, to see if the latest version is installed for each of them. In the case that it isn't so, it will indicate it and will show a link to download the corresponding driver (the download of the drivers is only available through a paid service offered by this software's developer).
The program doesn't have its own interface, and after scanning the computer it will offer the results by means of the browser that the operating system has selected by default.
Therefore, if you want an easy way with which you will be able to know at all times which of your drivers need to be updated, download Driver Agent. It's free and doesn't require installation.