SIMBL

SIMBL screenshots

SIMBL is a simple system for loading custom code into Cocoa applications.
Main window
SIMBL 0.9 : Main window

Alternative downloads

SIMBL Agent
0.9.9
FREE
SIMBL - pronounced like "symbol" or "cymbal" - enables hacks and plugins.
Xojo Plugins
17.3
Enhances Xojo and Real Studio with over 62,000 new functions.
Move Items X Plugins Installer
Allow users to copy plugin items, move items and make aliases.