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multiOTP

Freemium#34 of 54 in Multi-Factor Authentication Software

multiOTP: A capable self-hosted MFA option for RADIUS and directory-based environments. Ranked #34 of 54 in Multi-Factor Authentication Software by our editors (5.9/10); pricing: Free plan; best for free self-hosted RADIUS OTP.

5.9/10Editor score

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multiOTP5.9 Visit multiOTP

At a glance

Editor score
5.9 / 10
Pricing
Free plan
Best for
Free self-hosted RADIUS OTP
Free plan
Yes
Facts checked
16 Sep 2026

Where it wins
- Open-source edition supports RADIUS, HOTP/TOTP and multiple token methods
- Synchronizes users with Active Directory and LDAP
- Supports QR provisioning, REST integration and offline Windows authentication
Where it doesn't
- No adaptive authentication, passwordless authentication or device-trust features
- Self-hosted deployment requires infrastructure and administration
- Push notifications and high availability are limited to Enterprise

Our verdict on multiOTP

multiOTP is an open-source, self-hosted multi-factor authentication solution for organizations protecting VPNs, SSL-VPN connections, extranet portals, private websites, network devices and Windows logons. Its core model centers on RADIUS and OTP tokens, with support for OATH HOTP and TOTP, mOTP, YubiKey, SMS, scratch passwords and hardware tokens. Windows and Linux deployments are supported, and the product includes a web management interface, directory synchronization and token provisioning through QR codes.

Its strongest fit is an environment that already uses RADIUS, FreeRADIUS, TekRADIUS, WinRADIUS, Active Directory or LDAP. multiOTP also connects with Apache HTTP Server, OpenSSH, MySQL and external applications through web services, a REST API, a PHP library or command-line interface. QR-code provisioning and generated user PDFs support administrative workflows, while the offline-capable Windows Credential Provider uses local caching for Windows authentication when connectivity is unavailable. Enterprise adds master-slave high availability and REST API access, making the commercial edition more suitable for larger deployments.

The published plans show a free open-source edition alongside Pro and Enterprise. Pro supports up to 500 users, AD/LDAP synchronization, PSKC token files and no annual fee. Enterprise supports up to 100,000 users and adds master-slave high availability, REST API access, push notifications and a Raspberry Pi appliance option. Commercial pricing is listed in CHF including VAT, with published figures of CHF 200 for 10 additional Pro users and CHF 350 for 10 additional Enterprise users. Choose multiOTP for self-hosted RADIUS-based OTP and directory integration; organizations seeking adaptive, passwordless or device-trust capabilities should choose a different product.

Your product? Our editors can test multiOTP in depth and publish a review, labelled as paid · from $149/mo →

multiOTP pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 16 Sep 2026.

See plans on multiotp.com

All 2 multiOTP plans and prices →

multiOTP fact sheet

Free plan	Yes
Paid from	Not verified
Deployment	Self_hosted
Supported factors	OATH TOTP, OATH HOTP, mOTP, YubiKey, SMS, TAN/scratch passwords, hardware tokens
App integration methods	RADIUS, web service, REST API, PHP library, command-line interface, Active Directory/LDAP synchronization
Adaptive access policies	Not verified
Passwordless authentication	Not verified
Device trust controls	Not verified
Deployment	Desktop, Self-hosted
Platforms	Windows, Linux
Integrations	10 integrations: RADIUS, FreeRADIUS, TekRADIUS, WinRADIUS, Active Directory, LDAP …
Pricing	Free plan (source)
Website	multiotp.com
Facts checked	16 Sep 2026

multiOTP integrations

multiOTP lists 10 integrations on its own site.

RADIUS
FreeRADIUS
TekRADIUS
WinRADIUS
Active Directory
LDAP
Apache HTTP Server
OpenSSH
MySQL
REST API

Alternatives to multiOTP

See all multiOTP alternatives →

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Featured on iTechGuides

multiOTP is listed in our Multi-Factor Authentication Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update