Top 12 Open-Source Alternatives to Duo Security

Duo Security

Duo Security provides cloud-based two-factor authentication. Duo’s technology can be deployed to protect users, data, and applications from breaches, credential theft, and account takeover. subtitle

The top open-source alternatives to Duo Security are Auth0, LoginTC, and SoloKeys. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Auth0 Landing Page
1

Auth0

Auth0 is a program for people to get authentication and authorization services for their own business use.
Pricing:
- Open Source
#Identity And Access Management #Identity Provider #SSO 175 social mentions
LoginTC Landing Page
2

LoginTC

Simply Strong Two-Factor Authentication LoginTC is best in class. Effortless Administration. Intuitive User Experience. Cost-effective solution for all organizations.
Pricing:
- Open Source
- Freemium
- Free Trial
- $3.0 / Monthly (Professional Tier)
#Identity And Access Management #Two Factor Authentication #Authentication
SoloKeys Landing Page
3

SoloKeys

Secure login made open and easy 🔒
Pricing:
- Open Source
#Identity And Access Management #Two Factor Authentication #Authentication 26 social mentions
privacyIDEA Landing Page
4

privacyIDEA

privacyIDEA is an enterprise ready, open-source multi factor authentication system.
Pricing:
- Open Source
#Identity And Access Management #Two Factor Authentication #Authentication 1 social mentions
Authenticator Landing Page
5

Authenticator

Authenticator is a simple, free, and open source two-factor authentication app.
Pricing:
- Open Source
#Password Management #Identity And Access Management #Security & Privacy 4 social mentions
Keycloak Landing Page
6

Keycloak

Open Source Identity and Access Management for modern Applications and Services.
Pricing:
- Open Source
#Identity And Access Management #Identity Provider #SSO 4 social mentions
Nitrokey Landing Page
7

Nitrokey

Email Encryption. Encrypt your emails with GnuPG, OpenPGP, S/MIME or your favourite email client.
Pricing:
- Open Source
#Identity And Access Management #Two Factor Authentication #Authentication 1 social mentions
OTP Auth Landing Page
8

OTP Auth

The app for calculating one-time-passwords on iPhone and iPad.
Pricing:
- Open Source
#Identity And Access Management #Password Management #Two Factor Authentication 11 social mentions
Let's Encrypt Landing Page
9

Let's Encrypt

Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).
Pricing:
- Open Source
#Identity And Access Management #Two Factor Authentication #Security & Privacy 311 social mentions
JSON Web Token Landing Page
10

JSON Web Token

JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties.
Pricing:
- Open Source
#Identity Provider #Identity And Access Management #SSO 276 social mentions
FreeIPA Landing Page
11

FreeIPA

FreeIPA is an integrated security information management solution combining Linux (Fedora), 389...
Pricing:
- Open Source
#Identity And Access Management #Cloud Computing #Cloud Storage
Authenticator.cc Landing Page
12

Authenticator.cc

Authenticator generates 2-Step Verification codes in your browser.
Pricing:
- Open Source
#Identity And Access Management #Tech #Password Management 17 social mentions