Astrill is described as 'Ensures private, anonymous browsing with encrypted data streams, bypasses firewalls and censorship, masks activity from ISPs, and secures public Wi-Fi connections' and is a VPN service in the network & admin category. There are more than 50 alternatives to Astrill for a variety of platforms, including Windows, Mac, Android, iPhone and iPad apps. The best Astrill alternative is Proton VPN, which is both free and Open Source. Other great apps like Astrill are Mullvad, Windscribe, Psiphon and IVPN.