I initially only installed “Comodo Firewall” but for some reason they also installed a “Comodo Dragon Browser”, which I did not consent to. I always choose the “advanced” installation to uncheck bloatware, but in this case there was none and when you try to uninstall the browser, they force you to participate in their survey otherwise you won’t be able to uninstall the software…
I would have used Revo Uninstaller - the free version to remove it. After it runs the uninstaller it finds registry and file items left behind by the uninstaller.