However, if you're a developer or just want to compile software from source, you're more than a little stuck. The standard set of developer tools, libraries, sources, etc. have always been available as part of the Darwin releases and may be integrated into OS X manually. Installation, though, has been a rather unfriendly proposition involving overlaying bits of Darwin on your nice clean OS X installation. Thankfully, the contents of this CD are now available to the rest of us online. The Mac OS X Public Beta Developer Tools are freely available for download from the Apple Developer Connection web site by ADC Online members.
Membership is free, requiring only the patience to sit through a few online forms.
Click the Apple face icon at the far left of the Dock at the bottom of your screen to bring up the Finder window. Click the Apps button in the toolbar, select the Utilities folder, and double-click Terminal to open Terminal . While this is actually a .tar.gz file, it's unfortunately not obvious by the name alone. Uncompress and decode the file. Double-click Developer.pkg to start the installer.