Desktop UI Overview

The Desktop UI is made up of:
    Top Level Menu
    Top Level Toolbar
    Three windows which contain multiple tabs, detailed below
    Footer
Each of the three windows has a set of one or more tabs.
By default only the essential tabs are now shown when ZAP starts up.
The remaining tabs are revealed when they are used (e.g. for the spider and active scanner) or when you display them via the special tab on the far right of each window with the green '+' icon. This special tab disappears if there are no hidden tabs.
Tabs can be closed via a small 'x' icon which is shown when the tab is selected.
Tabs can also be 'pinned' using a small 'pin' icon that is also shown when the tab is selected - pinned tabs will be shown when ZAP next starts up.

The 'tree' window

This is displayed on the left hand side and allows you to navigate around the URLs visited.
     Sites tabThis shows all of the URLs visited in a tree structure

The 'workspace' window

This is displayed on the top right hand side and is where requests and responses are displayed. You can also make changes here when a breakpoint has been hit.
     Request tabThis shows the data your browser sends to the application
     Response tabThis shows the data the application sends back to your browser
     Break tabThis allows you to manipulate the data

The 'information' window

This is displayed on the bottom and is where useful information is displayed.
     History tabThis shows the requests in the order they were made
     Search tabThis allows you to search all of the requests and responses
     Breakpoints tabThis shows the Breakpoints set
     Alerts tabThis shows the alerts raised on the application
     Active Scan tabThis shows the active scans
     Spider tabThis shows the URLs not yet visited
     Params tabThis shows a summary of the parameters a site uses
     Output tabThis shows various informational messages

All but the most essential tabs can be hidden by clicking on the grey 'x' on the tab title.
You can display tabs you have hidden via the View Menu.
Hidden tabs may also appear when 'activated' by another action.

See also

     Getting Startedfor details of how to start using ZAP
     Dialogsfor details of the dialogs or popups
     Introductionthe introduction to ZAP

Official Videos

     ZAP In Ten: The Desktop Interface (10:05)
     ZAP Deep Dive: The Desktop Interface (31:53)