Windows/Mac/Linux: If you're running your Raspberry Pi in headless mode and you're not using a static IP address, it's a pain to find out the IP address. Adafruit has produced a simple little utility that makes the process as easy as a click of the mouse.
All you need to do is click the "Find My Pi" button and the software finds your IP address and offers up one-click access to SSH into the Pi. If you do it pretty often, it's a super fast and easy way to get into your Pi without futzing around.
Raspberry Pi Finder [GitHub]