[Android 2.2+][Windows Client] FilePush - "push" files from your PC to your device
FilePush lets you transfer files to your Android device with only two clicks. With the Windows Client you can create context menu entries that appear when you right-click a file inside Windows Explorer. With a click on the "Push file to device" entry the file will appear a few seconds later as a download on your device. It works much like Chrome2Phone just for files.
There is a paid version that costs $1.2 and a free trial that has all the features but lasts only for 14 days.
Windows Client (direct download)
Officially supported is Windows Vista, 7 and 8
It's faster but can obviously only be used if your PC is connected to the same Wireless Network as your Android device. A internet connection is still required on both the device and the PC as the transfer gets initiated by a Google Push message.
Google Drive Transfer
The file gets uploaded onto your Google Drive first and will then be downloaded onto the device. It's slower but should work anywhere with an internet connection.
Something that's probably a concern for a lot of people: Your Google password isn't stored anywhere, locally or on a server. It uses OAuth
and you only have to login with your Google Account the first time you launch the Windows application.
Article on Techie Buzz