Private Internet Access (PIA) is a personal virtual private network (VPN) service. It supports multiple VPN technologies such as PPTP, L2TP/IPsec, SOCKS5 and OpenVPN. Developed by London Trust Media, Inc.
License: Commercial
Private Internet Access offers a more robust feature set with a focus on privacy and security, making it ideal for users who need strong online protection. ZPN, on the other hand, is more budget-friendly with a straightforward user experience, making it suitable for casual users.