
What is OnlyKey?
OnlyKey is a USB security key that works virtually everywhere. Like a swiss army knife of authentication, OnlyKey natively supports: a hardware password manager, multiple two-factor methods (FIDO2, TOTP, and Yubico® OTP), passwordless SSH login, and OpenPGP.
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Recent OnlyKey Launches

OnlyKey DUO Open source Yubikey alternative with dual USB-C and USB-A
Launched on September 28th, 2021

Forum Threads
OnlyKey - OnlyKey is an open source alternative to YubiKey
OnlyKey is a USB security key that works virtually everywhere. Like a swiss army knife of authentication, OnlyKey natively supports: a hardware password manager, multiple two-factor methods (FIDO2, TOTP, and Yubico® OTP), passwordless SSH login, and OpenPGP.
OnlyKey DUO - Open source Yubikey alternative with dual USB-C and USB-A
OnlyKey DUO is a USB security key that works virtually everywhere, supporting both USB-A and USB-C. Say goodbye to remembering passwords! Like a security swiss army knife, use as a password manager, MFA (FIDO2, TOTP, and Yubico® OTP), SSH, OpenPGP, and more.
OnlyKey Alternatives
View all OnlyKey alternativesReview OnlyKey?
4.57/5 based on 15 reviews
Reviews
•1 review
Using my OnlyKey-Duo for half a year now , I am enthousiastic about it.
Functioning reliable on my USB A/C devices.
Easy configuration and backup , but lacks support if you have issues. (just forum)
After using Yubikey 5-NFC , OnlyKey-Duo is matching better for me.