ProtonVPN is a VPN provider that is open source. It is based in Switzerland and run by a company called Proton Technologies AG
Thunderbird is a free, open source, cross-platform email, newsgroup, news feed, and chat (XMPP, IRC, Twitter) client developed by the Thunderbird community, and previously by the Mozilla Foundation.
Firefox is fast, reliable, open-source, and respects your privacy.
FreeOTP is a two-factor authentication application for systems utilizing one-time password protocols. Tokens can be added easily by scanning a QR code.