This repository is a Homebrew tap for formulae that didn't quite fit in. In this case, mostly GUI and self-updating apps.
Think of it as an island of misfit toys, but instead of toys it's beer metaphors. And we don't mind if our beer is a little sour.
brew tap brandt/skunked
Then just install as usual with:
brew install <formula>
If a formula name conflicts, then use:
brew install brandt/skunked/<formula>
To untap it:
brew untap brandt/skunked
Also checkout adamv's homebrew-alt which contains a wealth of unofficial formulae.
The Homebrew project is focused on maintaining the quality of their core formula list and are quite selective about the formulae they accept.
Sometimes that means a desirable formula gets left out.
That's where Taps come in. They allow you to extend Homebrew's formula list without the pain of merging forks.
Here are a few of the most notable taps:
Depending on formulas in other taps
It's easy depend on formulas between taps.
Just include the tap path in the formula name.
man brew, or the Homebrew wiki.