Introduction

The Application Builder includes a comprehensive set of tools for creating and deploying applications based on COMSOL models. The main parts of the Application Builder that you use to create applications are the following:

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The COMSOL Desktop with the Application Builder window, which contains a tree with the nodes that define the application, and ribbon toolbars with tools for creating applications. See The Application Builder and the Application Tree and further sections in this chapter about the branches and nodes in the Application Builder tree.

•	The tools for creating and designing forms (user interfaces) with various form components (user interface controls) that are adapted for the application. See the Working With Forms chapter for more information.

•	The tools for creating and editing methods and classes for including custom code that can be connected to user interface events, for example. See the Working with Methods chapter for more information.

To get started, you can explore and run applications that are included in COMSOL Multiphysics and in many of the add-on products. In the Application Libraries window, the applications that appear under Demo Applications are runnable application examples that you can open and inspect to learn how to create forms (user interfaces) and methods (code for added functionality in the application). See the COMSOL Multiphysics Reference Manual for details about the Application Libraries window.