Chaos Frontend Toolkit is a free Chrome extension developed by Thibaud Courtoison. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools subcategory. This toolkit provides a set of tools that allow developers to break their web applications and, in doing so, find ways to improve them.

Chaos Engineering is a discipline that involves experimenting on a system to build confidence in its ability to withstand turbulent conditions in production. While typically applied to infrastructure, Chaos Frontend Toolkit applies Chaos Engineering principles to the frontend part of web applications.

The toolkit includes various tools such as Network, Timers, History, Accessibility, Localization, and Inputs. These tools are specifically designed to simulate scenarios that can potentially break web apps. By intentionally introducing chaos, developers can identify and address weaknesses and improve the overall resilience and performance of their applications.