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OpenOTP Authentication Server
Esch-sur-Alzette, Luxembourg
What it is
OpenOTP Authentication Server is an authentication and identity management solution for multi-factor authentication, offered for cloud or on-premise deployment. Its methods include mobile push, smart-card certificates, secure magic links, YubiKey, FIDO2 passkeys and software tokens. Federated access supports SAML, OIDC and OAuth, and directory integrations include Active Directory, LDAP, Entra ID, Okta, Google, Ping Identity and One Identity. The server also provides EAP network access control, mobile electronic signatures and mobile badging. Desktop login plugins are listed for Windows and macOS, with PAM plugins for Linux and macOS. A key deployment constraint is that OpenOTP Authentication Server is a WebADM sub-package and cannot be installed standalone. Pricing is available on request, and a 30-day trial is listed for both cloud and on-premise use, with different user and host limits. A Freeware plan is also listed as free, including documentation and forum support. RCDevs lists its European headquarters in Esch-sur-Alzette, Luxembourg.
For and against
For
- Cloud and on-premise deployment options
- Supports multiple authentication methods
- Integrates with listed directories and identity services
- 30-day cloud and on-premise trials
- Passwordless authentication and device trust controls
Against
- Cannot be installed as a standalone server
- Pricing is available on request
- Freeware support is limited to documentation and forums
The verdict
OpenOTP offers multiple authentication methods and federation options, but it depends on WebADM and cannot be deployed alone. Organizations should review the deployment requirement, trial limits and support terms before choosing a plan.
Who it suits
OpenOTP may suit organizations seeking multi-factor authentication across cloud or on-premise environments, particularly those using its listed directory integrations. RCDevs describes its security solutions as serving SMEs and large corporations in IT, finance, healthcare and government.
Plans and prices
Freeware
25 users · 10 SpanKey hosts · 1 year · 1 server, no HA
Read 9 Oct 2026 · rcdevs.com
Enterprise Edition
40 SpanKey hosts · 2 active servers with HA · maintenance included · all integrations and authentication methods
Read 9 Oct 2026 · rcdevs.com
Enterprise Edition + SLA
40 SpanKey hosts · 2 active servers with HA · maintenance included · all integrations and authentication methods
Read 9 Oct 2026 · rcdevs.com
On the record
- Additional capabilities
- The server also provides EAP network access control, mobile electronic signatures, and mobile badging.rcdevs.com · read 9 Oct 2026
- Authentication methods
- Supported methods include mobile push, smart-card certificates, secure magic links, YubiKey, FIDO2 passkeys, and software tokens.openotp.com · read 9 Oct 2026
- Company headquarters
- RCDevs lists its European headquarters at 1 Boulevard du Jazz, 4370 Esch-sur-Alzette, Luxembourg.rcdevs.com · read 9 Oct 2026
- Deployment
- OpenOTP is offered for cloud or on-premise deployment.openotp.com · read 9 Oct 2026
- Deployment requirement
- OpenOTP Authentication Server is a WebADM sub-package and cannot be installed standalone.rcdevs.com · read 9 Oct 2026
- Desktop integrations
- RCDevs lists OpenOTP login plugins for Windows and macOS, plus PAM plugins for Linux and macOS.rcdevs.com · read 9 Oct 2026
- Directory integrations
- OpenOTP integrates with Active Directory, LDAP, Entra ID, Okta, Google, Ping Identity, and One Identity.rcdevs.com · read 9 Oct 2026
- Federation
- The site lists SAML, OIDC, and OAuth for federated access.openotp.com · read 9 Oct 2026
- Intended users
- RCDevs describes its security solutions as serving SMEs and large corporations across IT, finance, healthcare, and government.rcdevs.com · read 9 Oct 2026
- On-premise trial
- The on-premise trial includes all features, two active-active HA servers, and up to 10 users for 30 days.rcdevs.com · read 9 Oct 2026
- Product
- OpenOTP is an authentication and identity management solution for multi-factor authentication.openotp.com · read 9 Oct 2026
- SaaS trial
- The cloud trial lasts 30 days and supports up to 250 OpenOTP users and 50 SpanKey hosts.rcdevs.com · read 9 Oct 2026
- Support
- The Freeware plan includes documentation and forum support only; the Enterprise + SLA plan includes SLA support for bug reporting.rcdevs.com · read 9 Oct 2026
