Awesome
LMAlertPopover
Summary
LMAlertPopover provides a simple API for showing an NSAlert as Popover (NSPopover).
ARC is currently not supported but it should be easy to convert the project. Alternatively, if your project is using ARC, you can also just disable it for LMAlertPopover.m (see this StackOverflow post).
<img src="https://raw.githubusercontent.com/lemonmojo/LMAlertPopover/master/Screenshot.png" width="644">License
New BSD License. For the full license text, see here.
Credits
LMAlertPopover was created by Felix Deimel.<br />