The Arguments object provides operations to access the command-line arguments that were passed at the start of this program.

This object provides a way of storing more than one value for a given name. These values can be accessed by another index.

This class provides access to the system clock

This class provides methods to interact with the desktop.

This class provides access to an online Dictionary service.

The File object provides methods to access, read and write information from and to a file on disk. Using this object, it is possible to save and open settings across multiple sessions of your program.

This class provides access to Flickr photo services.

The GraphicsWindow provides graphics related input and output functionality. For example, using this class, it is possible to draw and fill circles and rectangles.

This class helps to load and store images in memory.

The Math class provides lots of useful mathematics related methods

The mouse class provides accessors to get or set the mouse related properties, like the cursor position, pointer, etc.

This private helper class provides network access methods

The Program class provides helpers to control the program execution.

The Shape object allows you to add, move and rotate shapes to the Graphics window.

The Sound object provides operations that allow the playback of sounds. Some sample sounds are provided along with the library.

This object provides a way of storing values just like stacking up a plate. You can push a value to the top of the stack and pop it off. You can only pop the values one by one off the stack and the last pushed value will be the first one to pop out.

The Text object provides helpful operations for working with Text.

The TextWindow provides text-related input and output functionalities. For example using this class, it is possible to write or read some text or number to and from the text-based text window.

The Timer object provides an easy way for doing something repeatedly with a constant interval between.

The Turtle provides Logo-like functionality to draw shapes by manipulating the properties of a pen and drawing primitives.