What are some alternatives?
When comparing Psiphon.ca and Tor, you can also consider the following products
OpenVPN - OpenVPN - The Open Source VPN
Tor Browser - Tor is free software for enabling anonymous communication.
Pulse Secure - Pulse Secure provides a consolidated offering for access control, SSL VPN, and mobile device security. Contact Pulse Secure at 408-372-9600 to get a free demo.
ProtonVPN - ProtonVPN is a security focused FREE VPN service, developed by CERN and MIT scientists. Use the web anonymously, unblock websites & encrypt your connection.
StackPath - Secure Content Delivery Network, DDoS, WAF Service
TunnelBear - Really simple VPN to browse the web privately & anonymously.