When installing the free Avast antivirus software, users are given the option to uncheck virtually all of the optional modules that the software installs: password storage, disk cleanup, and more. By default, the Avast security browser extension and SafePrice browser extension have a check mark next to them, showing that they will be installed. Those can be unchecked and not installed.
Out of curiosity, PCWorld unchecked every option. The Avast software reported that the installation process completed, and Windows Security reported that the Avast software was installed. However, we weren’t able to open the Avast software itself, including its dashboard. We've reached out to the company for more information and will update this story if we hear back.