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Proton
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Proton Mail is the world's largest secure email provider. Swiss, end-to-end encrypted, private, and free.
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Proton Calendar is the world's first end-to-end encrypted calendar that allows you to keep your life private.
Proton Drive is a free end-to-end encrypted cloud storage that allows you to securely backup and share your files. It's open source, publicly audited, and Swiss-based.
Proton Pass Proton Pass is a free and open-source password manager which brings a higher level of security with rigorous end-to-end encryption of all data (including usernames, URLs, notes, and more) and email alias support.
SimpleLogin lets you send and receive emails anonymously via easily-generated unique email aliases.
The official ProtonVPN app on Linux has a lot of problems, like a memory leak that exists since years now. At least for me, only the cli without graphical interface works (but does so very well after some tinkering). The lack of Linux support (especially no Linux app for the drive) has frustrated me to the point I am regularly questioning my Unlimited subscription. But I agree in general, you can get around a lot of the Linux limitations by using browser extensions like the ProtonVPN one. And overall the addition of new services and great security outweighs the lack of Linux support.
That's very unfortunate about the Drive app. I just configure OpenVPN on my Linux servers.
Just what I'm used to. Wireguard would be the better choice.