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LinOTP

B
B tier on Multi-Factor Authentication SoftwareScore 7.3 · #4 of 50
Android app
Yes
Free plan
Yes
Runs on
Android, api, iOS, Linux, self-hosted, Web, Windows
linotp.org
The LinOTP homepage
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Summary

LinOTP is an open-source platform for multi-factor authentication, built to protect digital identities and transactions. It offers token choices such as OATH TOTP/HOTP, push, QR, SMS, email, FIDO U2F, and WebAuthn, alongside other listed factors including mOTP and OCRA. Integration options include SAML, OIDC, ADFS, RADIUS, HTTP/JSON API, PAM, OpenVPN, SSH, Apache, and WordPress. LinOTP connects to Active Directory, LDAP, and several SQL databases. Users can register, manage, and reset tokens in a self-service portal, and hardware tokens can be resynchronized automatically. The maker describes offline Windows authentication for users without a permanent internet connection. Deployment options include a virtual appliance and containers, and the maker says the platform can scale from small installations to enterprises with thousands of users and distributed setups. The open-source software is free under AGPLv3 and GPLv2; a free demo license is also available by arrangement. Paid support options include contracts, integration help, training, and remote or on-site assistance. LinOTP is developed and maintained by netgo software GmbH.

Who it is for

LinOTP suits organizations seeking open-source multi-factor authentication across connected services, directories, and databases. Its offline Windows login and multiple deployment options may also fit distributed environments.

What is good

  • Supports a wide range of authentication factors.
  • Connects to Active Directory, LDAP, and SQL databases.
  • Self-service portal supports token management and resets.
  • Offers virtual appliance and container deployment.
  • Free open-source software and demo license.

What to know first

  • LinOTP 3 Debian packages listed for Debian 10 Buster.
  • RPM packages are currently listed only for LinOTP 2.
  • Other Linux distributions may require source or pip installation.

Verdict

LinOTP combines varied authentication factors with directory connections, self-service token management, and deployment choices. Organizations should check the listed Linux installation options against their environment before choosing it.

LinOTP plans and pricing

All plans
LinOTP open-source software Free AGPLv3 and GPLv2; no public software price stated linotp.org · 4 Oct 2026
LinOTP demo license Free Free demo license for the LinOTP MFA platform; request and arrange the test deployment with the LinOTP team linotp.de · 4 Oct 2026

Compared on multi-factor authentication software

Free plan
Yeslinotp.org

Facts

Purpose
LinOTP is an open-source platform for strong multi-factor authentication and protecting digital identities and transactions.linotp.de · 4 Oct 2026
Scale
The maker says LinOTP scales from small installations to enterprises with thousands of users and supports distributed setups.linotp.de · 4 Oct 2026
Protocols
The product page lists SAML, OIDC, ADFS, and RADIUS among its integration protocols.linotp.de · 4 Oct 2026
Directories
LinOTP connects to Active Directory, LDAP, and SQL databases including PostgreSQL, MySQL, MariaDB, Oracle, and DB2.linotp.de · 4 Oct 2026
Tokens
Supported token options include OATH TOTP/HOTP, push, QR, SMS, email, and hardware tokens including FIDO U2F and WebAuthn.linotp.de · 4 Oct 2026
Offline login
The maker describes offline authentication for Windows users without a permanent internet connection.linotp.de · 4 Oct 2026
Self-service
Users can register, manage, and reset tokens through a self-service portal, and hardware tokens can be automatically resynchronized.linotp.de · 4 Oct 2026
Deployment
The maker lists a virtual appliance compatible with common hypervisors and container deployment for Kubernetes and other orchestration platforms.linotp.de · 4 Oct 2026
Security and compliance
The product page says its open-source architecture is auditable and lists support for GDPR, ISO 27001, NIS2, BSI IT-Grundschutz, PSD2, and PCI-DSS requirements.linotp.de · 4 Oct 2026
Audit
The LinOTP site says its signed audit log records authentication and management actions and is tamper-proof.linotp.org · 4 Oct 2026
Support
Paid support offerings include support contracts with SLAs, software subscriptions, integration services, possible 24/7 emergency response, SaaS, training, and remote or on-site help.linotp.de · 4 Oct 2026
Notable install limits
The LinOTP 3 download page lists Debian 10 Buster packages, says RPM packages are currently available only for LinOTP 2, and notes other Linux distributions may use source or pip installation.linotp.org · 4 Oct 2026
Maker
LinOTP is developed and maintained by netgo software GmbH.linotp.de · 4 Oct 2026

Company

Headquarters
Berlin, Germanylinotp.org · 28 Sept 2026
Founded
The company page says the LinOTP team has developed solutions since 2012; it does not state an exact founding year.linotp.de · 4 Oct 2026

Best LinOTP alternatives

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