[albertzeyer]

For ObjC:

https://github.com/albertz/Pyjector (and then access the ObjC runtime via the Python ObjC bridge)

https://github.com/albertz/FScriptAnywhereSIMBL

[saurik]

Or Cycript, which all of us iOS hackers use. ;P

http://www.cycript.org/ http://iphonedevwiki.net/index.php/Cycript