Thomas Anderson contributed to the reactos/reactos repository by implementing a feature that set DuckDuckGo as the default search engine for the Internet Browser desktop icon, aligning browser behavior with ReactOS branding. Working primarily in C and leveraging his skills in desktop application development and system programming, he ensured the change maintained compatibility with the Gecko engine while improving user experience through consistent search defaults. His approach emphasized maintainability and traceability, with descriptive commit messages to support future audits. Although the scope was focused and no bugs were addressed during this period, the work demonstrated careful attention to UI consistency and system integration.