For pure nostalgia and lightweight architectural sketching, still wins. But for production work on modern operating systems (Windows 11), you may encounter compatibility issues with high-DPI displays and graphics drivers.
Official SketchUp releases were digitally signed by Google Inc. Portable versions found online have had their digital signatures stripped or spoofed to bypass licensing checks. Without a valid signature, the Windows operating system cannot verify the integrity of the code, leaving the user vulnerable to Man-in-the-Middle (MitM) attacks during the download process. Google Sketchup 8 Portable Free Download
If the manual method is too technical, only download from (though they don't officially host SketchUp 8 due to licensing). Some third-party "PortableAppZ" blogs are credible, but always scan files. Look for a single .paf.exe file. Google Sketchup 8 Portable Free Download