Under Windows, TeamViewer Portable does not requires installation to use it.

Under macOS, the TeamViewerQS.dmg file contains the TeamViewerQS.app which can just be doubled-clicked to run the application, and does not install.Under Windows, the TeamViewerQS.exe can be run directly after downloading it and does not install.Under Windows and macOS, TeamViewer QuickSupport does not requires installation to use it. Under macOS, the TeamViewerHost.dmg file contains the Install TeamViewerHost.pkg file, which is an installer, not the TeamViewerHost.app that gets installed by running the installer package.Under Windows, the TeamViewer_Host_Setup.exe installs TeamViewer Host.Under Windows and macOS, TeamViewer Host requires installation to use it. The, TeamViewer.dmg file contains the Install TeamViewer.pkg, which is an installer, not the TeamViewer.app that gets installed by running the installer package.Under macOS, TeamViewer requires installation to use it. Installation to access this computer remotely (unattended).

Under Windows, TeamViewer Installation options, using TeamViewer_Setup.exe, are: The following is based on information gathered from the TeamViewer web site and running the corresponding downloads for each:

Teamviewer dmg