Mask Surf is described as 'All-in-one online privacy solution that lets you protect your identity when surfing the Internet and clean your browser traces accumulated on your computer every day. The latter may include the information about your surfing habits, recent web sites, how often' and is an app. There are more than 100 alternatives to Mask Surf for a variety of platforms, including Windows, Mac, Android, iPhone and Linux apps. The best Mask Surf alternative is Tor Browser, which is both free and Open Source. Other great apps like Mask Surf are Tor, Proton VPN, Mullvad and Windscribe.