Sharedrop is another web-based alternative inspired by Apple’s AirDrop. It works identically to Snapdrop but offers QR code pairing for easier discovery.
If you need to transfer photos, videos, or documents wirelessly to a Windows 7 machine, these apps are the best functional replacements: Quick Share For Windows 7
Leo discovered that while the official Google app wouldn't install, there were two "secret doors" for older systems: The "Old Faithful" Alternative: LocalSend Quick Share For Windows 7
Thus, there is no . But several unofficial and alternative pathways exist. Quick Share For Windows 7