# GUI Tools


| **Tool Name** | **Description** |
|------|------|
| APN | The A-Shell Programmers Notepad is a modern, Windows-based integrated development environment (IDE) that makes A-Shell programming much more efficient than it can be with VUE. It is recommended for all A-Shell programmers who do or can do their programming on a PC. APN also provides an environment that will be familiar to programmers migrating from other languages. |
| LEO | A-Shell's most sophisticated AUI development tool is a program called LEO, developed by Jorge Tavares. Contact MicroSabio for more information. |
| [Text Attribute Manipulator](text_attribute_manipulator.md) | Tool to allow you to change the default text attributes. |
| [Control Dump](controldump.md) | Debugging and design tool. |
| Control Definition Snapshot | Related to tracing GUI events is the ability to get a snapshot of the definitions of all the controls currently in existence. See [Control Dump](controldump.md). |