Drupal Sublime Text
Adds Drupal 7 snippets/functionality. Find the source on Github: https://github.com/robballou/drupal-sublimetext
With Package Control
If you have the Package Control package installed, you can install Drupal from inside Sublime Text itself. Open the Command Palette and select "Package Control: Install Package", then search for Drupal and you're done!
Mac OS X:
pushd ~/Library/Application\ Support/Sublime\ Text\ 2/Packages git clone git://github.com/robballou/drupal-sublimetext.git Drupal popd
cd "C:\Users\[your username]\AppData\Roaming\Sublime Text 2\Packages" git clone git://github.com/robballou/drupal-sublimetext.git Drupal
Most of this package adds snippets for Drupal 7 core functions. I am still working on adding/checking that these functions are created correctly, but most of the functions should be there. There is also some information about snippets in the Sublime documentation.
Snippets can also be accessed via the command palette.
There also are some other completions for constants. There still needs to be a big import for some constants here but for now this should help if you use these in your site development. Recently I added a package I have been using for Drupal module info files which provides syntax highlighting, but also a few snippets and completions.