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Instead of Proton Authenticator
Proton Authenticator alternatives
Proton Authenticator creates time-based one-time codes for account logins, and the app can display them without an internet connection. It is free, has no ads or tracking, and runs on Android, iOS, Linux, macOS, and Windows. You can use it without a Proton Account, import codes from several authenticator apps, and export them. Local or cloud backups and optional cross-device syncing use end-to-end encryption; the app is also open source and supports face or fingerprint unlock.
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Yubico Authenticator
by Yubico AuthenticatorFree plan AndroidiPhoneLinux+2TOTP and HOTP across desktop and mobile — Yubico Authenticator adds HOTP alongside TOTP, but does not include encrypted backup or multi-device sync.
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Bitwarden
by Bitwarden Inc.Free plan Open source AndroidAPIExtension+6Password management with authenticator features — Bitwarden combines password, note, card, identity, and passkey management with username and password generation.
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Zoho OneAuth
Free plan AndroidiPhoneMac+1Zoho work-account MFA with push approvals — Zoho OneAuth adds push approvals and MFA for employees' Zoho work accounts.
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Google Authenticator
Free plan AndroidiPhoneMobile TOTP and HOTP with QR setup — Google Authenticator adds HOTP and QR-code setup but is limited to Android and iOS.
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Duo Mobile
Free plan AndroidiPhonePersonal and company MFA with push approval — Duo Mobile adds one-tap Duo Push approvals and team administration, with paid plans from $3/user/mo.
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SAASPASS Authenticator
by SAASPASS AuthenticatorFree plan AndroidExtensioniPhone+4HOTP, push approvals, and team administration — SAASPASS adds HOTP, push approvals, and team administration, with web and browser-extension access.
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miniOrange Authenticator
Free plan AndroidAPIiPhone+5 - 12
Authy
Free plan AndroidiPhone - 13
Microsoft Authenticator
Free plan AndroidiPhone - 14
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2FAS Auth
Free plan AndroidExtensioniPhone - 16
TwoFac
Free plan AndroidExtensioniPhone+4 - 17
Open Authenticator
Free plan AndroidiPhoneLinux+3 - 18
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SelfHostAuth
Free plan AndroidAPIExtension+6 - 21
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You may want another option if you need HOTP codes, push approvals, team administration, or authentication alongside other account tools. Proton focuses on TOTP and does not include password management or push approvals. Its desktop and mobile coverage is broad, but some alternatives add web access or browser extensions, while others are mobile-only. When switching, weigh the code types you need, which devices you use, and whether encrypted backup and sync matter. Also consider whether a standalone authenticator is enough or whether password management or workplace MFA would suit you better.
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