An App to Find Out How Much Free Space Your Mac Truly Has
FreeSpace is a tool that lets you know the actual free space your Mac has. This full-featured monitor is also a one click ejector, a functionality that no similar freeware offers.
Displays Space Accurately
On Mac OS 10.7 and later, Apple has switched off local snapshot by default. This means some disk space would have been occupied and hidden in the form of local backup within OS X. Finder would always display available space not taking into account local snapshots. However, FreeSpace displays actual available space accounting snapshots. In other words, you would see a difference in statistics relating to available space between Finder, Get Info, and Disk Utility inspectors. This is something to be expected and could be ignored. By the way, Finder displays available disk space without considering local snapshots because these snapshots would give up space if required.
Fully Featured
FreeSpace is probably the most complete free space monitor. Its well-categorized menu shows free spaces there are to all external, local, and network drives. The one-click eject feature makes ejecting single partition seamless. Whenever the drive is short on space, the tool lets you know the same. The eject and mount notification could be made to display in the notification center or menu-bar. And you would appreciate the fact that FreeSpace works well in conjunction with Time Machine.