Application Enhancer SDK 2.0.3

The Application Enhancer SDK allows you to create Application Enhancer modules.
Application Enhancer SDK provides great features for everything that is needed to create a fully-functioning APE module. Application Enhancer SDK is used in such well-known products as WindowShade X, FruitMenu, Labels X, and many others.
Includes:
- ApplicationEnhancer.framework containing everything you need to start developing your own APE module.
- Interapplication and intermodule communication facilities.
- Application Enhancer client auto-installing facilities in case you dont want to send user to Application Enhancer homepage.
- Objective-C method and C/C++ function trapping facilities.
- Free technical support. (limited)
- Example extensions with source code, including Metallifizer sources.
Application Enhancer SDK is also available in APE Lite form, which only provides facilities to change Mach-O symbols inside of your running process.
APE Lite SDK is now available freely as a part of the SDK for you to use - you can look at the APELite.h file to get an impression what it can do for you.
However, even though APELite is free to use, it still requires a license agreement.