Breez ClickOnce 4C is a free Chrome add-on that allows users to enable ClickOnce support in the Google Chrome browser. With this add-on, users can launch any Windows Forms or Windows Presentation Foundation application that is based on Microsoft's ClickOnce technology.

ClickOnce is a deployment technology that allows developers to publish Windows-based applications to a website and have users install and run the application with just a few clicks. However, ClickOnce is not natively supported in Google Chrome, which can be a limitation for users who prefer to use this browser.

With Breez ClickOnce 4C, users can overcome this limitation and enjoy the convenience of launching ClickOnce applications directly from Chrome. This add-on is a valuable tool for developers and users who rely on ClickOnce applications for their work or personal use.