Windows: If you're not looking for a full-blown app to help you manage all of the files and data on your Android phone but could use a utility to keep your photos, videos, and music in sync between your phone and your desktop, Synx is for you.
Synx is a free, lightweight utility that copies photos, movies, recorded video and music from your Android phone to your desktop every time you connect it. Just tell the app which drive letter your Android phone gets when connected, specify your sync folders, and the app will make sure the two folders are always the same, whether the new files are added on the phone or on your desktop.
As long as none of the folders or drive letters change, just open the app, click the huge "Synx" button, and the app will handle the rest. It's also a useful way to make sure all of the data on your phone is backed up in a safe place. Synx is free and Windows only.