Based on our record, CleanMyPC seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
The CleanMyPC app scrubs the relevant registry when it uninstalls other apps. But your prescribed step 3 (scanning registry for "waterfox" after uninstallation & restart) did yield an escaped entry with "waterfox" in the entry (path/address), so I deleted it before restarting and installing. Source: over 2 years ago
CleanMyPC (to note that they are no longer maintaining nor updating this app). - Source: dev.to / over 2 years ago
SDelete - Securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.
Avast Cleanup - Next generation tuneup and cleanup for your PC
Clean Master - Some users swear by it, some call it a glorified snake oil that does more harm than good. That can be said about any snake oil, but what specific brand of snake oil can boast almost a billion downloads around the world?
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Kerish Doctor - Kerish Doctor 2015 is an all-in-one solution for automatic maintenance of Windows-based computers.
Windows Disk Cleanup - Disk Cleanup is a computer maintenance utility included in Microsoft Windows designed to free up...