What OS X tweaks or customization applications do you find indispensable?

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  • Limit each answer to a single entry
  • Include a short description
  • Include a link to an application website if possible, formatted like ## [AppName](URL)
  • 2
    It was decided on meta that price should not be specified in this type of question. Also, I've added some rules and pinged the mods to make this CW. – Loïc Wolff Oct 26 '11 at 7:45
  • I'm confused. Is this about OS X hacks (defined in title)? Or is this about UI hacks (defined in the first line of the question)? And is this limited to applications (which?) (defined in rule § 1)? – Jari Keinänen Oct 26 '11 at 8:17
  • 2
    @Loïc Wolff - What about free/non-free? I think that is a useful distinction. Also, having the price, or at least the free/non-free status makes me feel a little less like I'm shilling for the company. – Fake Name Oct 26 '11 at 8:31
  • @koiyu - Both. Some hacks come in the form of applications, and vice versa. Really, anything that tweaks the core behaviour of the finder/Window-manager is fair game. – Fake Name Oct 26 '11 at 8:32
  • Even free/non-free can change (Growl, for instance) so this kind of information is too "volatile" to be kept as answer. If you feel this should be changed, you can talk about it on Ask Different Meta. – Loïc Wolff Oct 26 '11 at 8:57

31 Answers 31


You can view hidden files on Finder by using the following keyboard shortcut:

Cmd + Shift + . (period)

It's great if you want to explore around the hard disk.

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