Objective-C appscript (objc-appscript) is a high-level Apple event bridge that allows you to control scriptable Mac OS X applications from Objective-C programs.
For example, to get the value of the first paragraph of the document named "ReadMe" in TextEdit:
TEApplication *textedit = [TEApplication applicationWithName: @"TextEdit"];
TEReference *ref = [[[[textedit documents] byName: @"ReadMe"] paragraphs] at: 1];
NSString *result = [[ref get] send];
This is equivalent to the AppleScript statement:
tell application "TextEdit"
get paragraph 1 of document "ReadMe"
end tell
ObjC-appscript supports MacOS X 10.4 and later.