StringUtilities is a Sublime Text 2 plugin, which adds to the editor useful string functions like:
Convert Tabs to Spaces
Convert Spaces to Tabs
Convert Chars to Html Entities
Convert Html Entities to Chars
Convert Camel Case <-> Underscores
Convert To Unicode Notation
Convert From Unicode Notation
Convert To Base64
Convert From Base64
Convert To Hex
Convert From Hex
Convert HTML Color From Hex To RGB
Convert HTML Color From RGB To Hex
Calculate Selection MD5
Calculate Selection SHA1
Convert Unixtime <-> Datetime
Insert Current Datetime
Insert Short Password
Insert Medium Password
Insert Long Password
Insert Internal IP Address
Insert External IP Address
ST2 - github.com/akalongman/sublimete … gutilities
ST3 - github.com/akalongman/sublimete … s/tree/ST3