HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
OpenVPN - OpenVPN - The Open Source VPN
Trustwave Services - Trustwave is a leading cybersecurity and managed security services provider that helps businesses fight cybercrime, protect data and reduce security risk.
ProtonVPN - ProtonVPN is a security focused FREE VPN service, developed by CERN and MIT scientists. Use the web anonymously, unblock websites & encrypt your connection.
Acunetix - Audit your website security and web applications for SQL injection, Cross site scripting and other...
TunnelBear - Really simple VPN to browse the web privately & anonymously.