No. 1 of 50 ·Multi-Factor Authentication Software

LinOTP

Web · Windows · Linux · Android · iPhone · Self-hosted · API

Freedom report

Three barsScore 6.7

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely5 of 6 device platforms
DocumentedPlans, terms and facts published

LinOTP is ranked #1 of 50 in multi-factor authentication software on Freedom251. It runs on Android, API, iOS, Linux, Self-hosted, Web, Windows. There is a free plan. A free trial is offered.

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: Yes

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The record

Purpose: LinOTP is an open-source platform for strong multi-factor authentication and protecting digital identities and transactions.
Scale: The maker says LinOTP scales from small installations to enterprises with thousands of users and supports distributed setups.
Protocols: The product page lists SAML, OIDC, ADFS, and RADIUS among its integration protocols.
Directories: LinOTP connects to Active Directory, LDAP, and SQL databases including PostgreSQL, MySQL, MariaDB, Oracle, and DB2.
Tokens: Supported token options include OATH TOTP/HOTP, push, QR, SMS, email, and hardware tokens including FIDO U2F and WebAuthn.
Offline login: The maker describes offline authentication for Windows users without a permanent internet connection.
Self-service: Users can register, manage, and reset tokens through a self-service portal, and hardware tokens can be automatically resynchronized.
Deployment: The maker lists a virtual appliance compatible with common hypervisors and container deployment for Kubernetes and other orchestration platforms.
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.
Audit: The LinOTP site says its signed audit log records authentication and management actions and is tamper-proof.
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.
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.
Maker: LinOTP is developed and maintained by netgo software GmbH.
Headquarters: Berlin, Germany
Price from: Free

Where it ranks on Freedom251

Best Multi-Factor Authentication Software in 2026#1 of 50

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Sources

linotp.de/produkte/linotp· checked 4 Oct 2026
linotp.org· checked 4 Oct 2026
linotp.de/support· checked 4 Oct 2026
linotp.org/download.html· checked 4 Oct 2026
linotp.de/ueber-uns· checked 4 Oct 2026
linotp.de/teststellung· checked 4 Oct 2026