Yes I know there are tons of drivers Installers around but this is more..
This is a Standalone version of the drivers installer from the SkipSoft Unified Android Toolkit.
There are a selection of driver packages you can install to suit all devices (google, cwm universal, samsung and oneplus). There is also lots of help and information on what to do if the drivers don't work properly. A test routine/checker is available which will attempt to detect the plugged in device (and reboot to fastboot mode and back on google/nexus devices) to verify the drivers are working. Tools are also included to remove unwanted drivers if a fresh start is needed.
The Adb/Fastboot installer (Android Debug Bridge version 1.0.36) can install System-Wide (for all Users on the PC) or for the Current User Only. This is a very simple installer and means you do not have to download the complete SDK from google. You can also easily open a command prompt to send commands to your device.
Download link: FROM SKIPSOFT
This really is the the most comprehensive driver/adb/fastboot installer available.
1.0.3 - Added adb/fastboot latest version check at startup and download if needed
1.0.2 - Added command prompt option to menu
1.0.1 - Fixes to adb/fastboot installer
1.0.0 - Initial release