3 6 Ke·2025-08-01 11:24Core Viewpoint - Opera has filed a complaint with Brazil's antitrust agency CADE, accusing Microsoft of anti-competitive practices in promoting its Edge browser, which has negatively impacted Opera's market position as the third most popular PC browser in Brazil [1][3]. Group 1: Allegations Against Microsoft - Opera claims that Microsoft has employed various "manipulative design strategies" to persuade Windows users to adopt Edge, effectively blocking competition by pre-installing Edge and creating barriers for users to download other browsers [3][8]. - Specific tactics include forcing Edge to open links from Microsoft applications like Outlook and Teams, regardless of user settings for default browsers, and promoting Edge prominently in Bing search results while downplaying Chrome's download link [8][10]. Group 2: Impact on Opera - The competitive landscape has shifted since Microsoft transitioned Edge to the Chromium engine, diminishing Opera's performance advantage, which previously allowed it to attract a loyal user base due to its speed and unique features [6][12]. - Microsoft's strategies have limited Opera's visibility and accessibility, making it increasingly difficult for the browser to reach potential users, thereby exacerbating its challenges in a market dominated by larger players like Chrome and Edge [12][14].