Json - discontinued

Yaml

Twig

Smarty

Coffeescript

Markdown

reStructuredText

Gherkin (Cucumber, Behat)

Shell scripts - part of DLTK

Vrapper (vim integration)

Emmet (zen-coding integration)

...can be expanded into:

Jquery integration

JSHint integration

Closure templates support

ExtJS integration - discontinued

Less support

Eclipse color themes