Display Maid allows you to save and restore window locations based on your display configuration.

If you have a laptop that you use with one or more external displays, and you're tired of having to rearrange your windows every time you connect/disconnect your display, then Display Maid is for you.

Stay can store a set of windows for every combination of displays that you use with your computer. Stay can also be configured to automatically restore windows as displays are connected and disconnected.
If you're fastidious about keeping your windows tidy, Stay is for you. Stay ensures that your windows are where you want them, even as you connect and disconnect displays.