Productivity Sauce

ShareDrop is a simple open source service that can come in handy when you need to quickly share files and documents with machines on the same network. What makes ShareDrop particularly appealing is the fact that it's ridiculously easy to use. To send a file to another machine, open the ShareDrop page on both systems, then drag and drop the file directly on the recipient's avatar. File transfer begins as soon as the recipient accepts the file. The service requires no registration, and you don't have to provide any information. But if you want other users to recognize you by your Gravatar and email address instead of a generic avatar and the current IP address, you can sign in to ShareDrop using the Mozilla Persona system.

ShareDrop's source code is available on GitHub, so in theory you can host your own instance of the service. But chances are that deploying ShareDrop on your own server is not trivial.