2fa-utils

TOTP and HOTP utilities.
v1.2.6 URL: https://unpkg.com/2fa-utils@1.2.6/dist/2FA.js
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TOTPHOTPOTP2FATwo Factor Authentication

auth-center

auth center with TOTP
v2.2.0 URL: https://unpkg.com/auth-center@2.2.0/app/index.js
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authcenterTOTPHOTP

2fa-hotp-totp

Zero dependency HOTP/TOTP 2FA
v2.1.3 URL: https://unpkg.com/2fa-hotp-totp@2.1.3/index.js
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2FAHOTPTOTPOTP

@akanass/rx-otp

HMAC-based (HOTP) and Time-based (TOTP) One-Time Password manager. Works with Google Authenticator for Two-Factor Authentication.
v2.0.0 URL: https://unpkg.com/@akanass/rx-otp@2.0.0/commonjs/index.js
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One-Time PasswordOTPHOTPRFC 4226TOTPRFC 6238Google AuthenticatorTwo-Factor AuthenticationRFC 3548RxJSRxReactiveXObservableObserverStreamsAsyncES2015ES2016ES2017ES2018ES6ES7ES8ES9TypescriptBrowser

@vs-org/authenticator

VS authenticator package can generate TOTP (RFC6238) for 2FA, and also provide secret and recovery codes for 2FA setup
v0.0.8 URL: https://unpkg.com/@vs-org/authenticator@0.0.8/lib/index.js
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TOTPgeneratornodeauthenticatorHOTPgeneratorVSauthenticatorrecovery code generatorvs-recovery-code-generatorvs-orgRecovery codes generatorvs recovery code generator