Mac App Store command line interface
Managing windows size and position in OSX
Corpus of data automatically shared with Apple by a standard installation of OS X Yosemite.
Observes filesystem changes using the same underlying API as Spotlight Provides a graphical representation of the file activity
GrandPerspective is a small utility application for Mac OS X that graphically shows the disk usage within a file system. It can help you to manage your disk, as you can easily spot which files and folders take up the most space. It uses a so called tree map for visualisation. Each file is shown as a rectangle with an area proportional to the file's size. Files in the same folder appear together, but their placement is otherwise arbitrary.
EVE helps you to learn shortcuts, in order to increase your productivity with MAC OS X. Every time you execute an action using the mouse, EVE will show you the matching shortcut.