Shadowsocks is an open-source proxy project, widely used in mainland China to circumvent Internet censorship. Developed by clowwindy
License: Open Source
Shadowsocks is primarily a proxy tool focused on bypassing censorship, making it ideal for users in restrictive regions; it requires more technical knowledge. In contrast, Mullvad is a full-fledged VPN with strong privacy features and a no-logs policy, making it suitable for users seeking comprehensive online security.