Google Authenticator & Microsoft Authenticator
🇺🇸
non-EU
The codes guarding everything else, kept by the companies you were guarding against.
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Proton Authenticator
Geneva. Free, open source, no account required, and it runs on Windows, macOS and Linux as well as your phone.
🇨🇭
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Aegis Authenticator
Dutch and open source. Android only, everything stays on the handset, and the encrypted backup is yours — the part Google Authenticator does worst.
🇳🇱
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Yubico Authenticator
Stockholm. The secrets live on a YubiKey rather than on the phone, so a lost handset is not a lost account.
🇸🇪
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Nitrokey
Teltow, near Berlin. Open-source security keys, hardware and firmware both published for anyone to audit.
🇩🇪