hakanw / tabmate (http://konstochvanligasaker.se/tabmate)
Essentially, TabMate is a way for TextMate to remember the coding style, and bundle used for specific source code files. This way, when you open a source code file with different editing options from your preferred (for example, from work), you don't have to manually adjust these settings - TabMate will do it for you. See the website for more information