Seald - Keep your conversations secure, everywhere.
ProtonVPN - ProtonVPN is a security focused FREE VPN service, developed by CERN and MIT scientists. Use the web anonymously, unblock websites & encrypt your connection.
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
OpenVPN - OpenVPN - The Open Source VPN
Keybase Chat - End-to-end encrypted chat built into Keybase
TunnelBear - Really simple VPN to browse the web privately & anonymously.