Git’s design is a great example of the Unix design philosophy: many small programs. Though originally designed as a toolkit, it instead became program comprised of many small components.
Just an unranked list of free or (mostly) inexpensive apps that I have come to rely on for every day web dev use.
This one is pretty easy, but, in case you were curious how to find it without launching Xcode…
Getting PHP Xdebug working on Mac OS X 10.7 Lion
This is a solution for one of those extremely small details regarding your website: the favicon.