UltraViewer is widely recognized as a top free alternative to TeamViewer, offering professional-grade tools for no cost.
Note: The "Unsupported" tag usually means it lacks some advanced, persistent unattended access features found in the full installer, but it works perfectly for quick remote support. UltraViewer How to Use UltraViewer Portable Open the Folder: Open the extracted folder and run UltraViewer.exe Share Credentials: UltraViewer will generate an ultraviewer portable zip download