Spring Security - The Spring portfolio has many projects, including Spring Framework, Spring IO Platform, Spring Cloud, Spring Boot, Spring Data, Spring Security...
ProtonVPN - ProtonVPN is a security focused FREE VPN service, developed by CERN and MIT scientists. Use the web anonymously, unblock websites & encrypt your connection.
Auth0 - Auth0 is a program for people to get authentication and authorization services for their own business use.
OpenVPN - OpenVPN - The Open Source VPN
JSON Web Token - JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties.
TunnelBear - Really simple VPN to browse the web privately & anonymously.