Proton
Empowering you to choose a better internet where privacy is the default. Protect yourself online with Proton Mail, Proton VPN, Proton Calendar, Proton Drive. Proton Pass and SimpleLogin.
Proton Mail is the world's largest secure email provider. Swiss, end-to-end encrypted, private, and free.
Proton VPN is the world’s only open-source, publicly audited, unlimited and free VPN. Swiss-based, no-ads, and no-logs.
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.
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No. Signal is the only private messaging app.
Not the only one.
Threema is decent, too. Crypto is comparable, and allows signups without email or phone number. It's a paid app, though, but anonymous purchase options are available.
Session? Session messenger?
Actually session is great too 👍
Session comes with its own anonymity network...you sometimes need a VPN to access it, but still.
And even though there's no quantum encryption on it yet. Whoever would try to use a quantum computer to break in would still need to use it for quite awhile on hundreds of different servers each processing thousands of different people's traffic at any time.
What about SinpleX Chat? Briar?