Introduction "See the screen, understand the task, take the action." This is the No.62 article in the "One Open Source Project a Day" series. Today, we are exploring UI-TARS-Desktop . The AI agent projects we have covered recently—OpenHarness, Symphony, Agent Skills—all operate within the "code world": files, APIs, terminal commands. UI-TARS-Desktop does something fundamentally different: it lets AI directly control a real desktop GUI —not through code, not via API calls, but by clicking buttons, filling out forms, and dragging windows, exactly like a human user. This is ByteDance's open-source multimodal AI agent stack. Its 32.3k Stars reflect the industry's high expectations for the "general-purpose computer-use agent" direction. It contains two complementary sub-projects: Agent TARS , a developer-facing general-purpose agent that brings visual understanding to the terminal, and UI-TARS Desktop , a native desktop application that controls your local machine.…