The official front-end framework for building experiences that fit seamlessly into Microsoft 365.

Fluent UI. Use the official front-end framework for building experiences that fit seamlessly into Microsoft 365.

Use Microsoft Graph REST APIs and SDKs to accelerate Microsoft 365 app development. Try the toolkit to integrate common experiences into your app quickly.

Microsoft no longer supports this content and will not be responding to bugs or issues. We recommend using the newer version Office UI Fabric React as your front-end framework.

Live Share offers a free, fully managed, and ready to use Azure Fluid Relay service backed by the security and global scale of Teams. With just a few lines of front-end code, your users can co-watch, co-edit, and co-create together.

A Checkbox is a UI element that allows users to switch between two mutually exclusive options (checked or unchecked, on or off) through a single click or tap. It can also be used to indicate a subordinate setting or preference when paired with another control.

Get resources and information to help you build solutions for the Microsoft 365 platform, including recommendations tailored to your areas of interest. You might also qualify for a free, renewable developer subscription that comes configured with sample data.

ContextualMenus can have submenus from commands, show selection checks, and icons. Organize commands in groups divided by rules. This helps users remember command locations, or find less used commands based on proximity to others.

We recommend using the newer version Office UI Fabric React as your front-end framework. Get started Use the CDN, Bower, NPM, or Nuget to get the components and core styling.

Microsoft no longer supports this content and will not be responding to bugs or issues. We recommend using the newer version Office UI Fabric React as your front-end framework.