This video delves into the technical underpinnings of today's browser market: despite numerous choices like Edge, Firefox, Safari, Opera, Brave, and Vivaldi, the vast majority are built upon Google's open-source project, Chromium. The video systematically explains Chromium's historical context (developed concurrently with Chrome in 2008), its technical advantages (integrating the WebKit engine and V8 JavaScript engine), and the reasons why browsers like Opera, Brave, and even Microsoft Edge abandoned their own engines in favor of Chromium. Furthermore, the video critically analyzes the dual nature of the Chromium ecosystem: on one hand, it offers excellent speed, stability, extension compatibility, and cross-platform support; on the other hand, it poses privacy risks, as Google continuously communicates with its servers through extension updates, DNS queries, and influences ad blocker functionality through policies like Manifest V3. For privacy-conscious users, the video recommends Firefox (using the Quantum engine) and Safari (using the WebKit engine) as non-Chromium alternatives, while also pointing out their limitations in terms of extension numbers and speed. Overall, choosing a browser requires a trade-off between functionality, speed, and privacy protection.