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SPECIFICTION
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OpenOTP Authentication Server

rcdevs.com

Free plan WebWindowsmacOSLinuxiOSAndroid
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Spec score 8.1 #43 of 111 in Authenticator apps

Spec sheet

Purpose
OpenOTP is an MFA server with OTP and FIDO2 for securing user network access.Read 30 Sep 2026 · rcdevs.com
Deployment
OpenOTP is offered for on-premise installation and as a cloud/SaaS service.Read 30 Sep 2026 · rcdevs.com
Free plan
YesRead 20 Sep 2026 · rcdevs.com
Support
The feature table lists SLA and support services as optional, and RCDevs links to product documentation and community forums.Read 30 Sep 2026 · rcdevs.com
Headquarters
Esch-sur-Alzette, LuxembourgRead 28 Sep 2026 · rcdevs.com
Access policies
The feature list includes per-application, per-user and group, risk-based, network and geolocation policies, plus contextual authentication and step-up/step-down policies.Read 30 Sep 2026 · rcdevs.com
Authentication methods
Listed methods include mobile push, FIDO2/passkeys, YubiKey, OATH tokens, SMS, email, printed OTP lists, and PKI certificate authentication.Read 30 Sep 2026 · rcdevs.com
Directory integration
The product supports local Active Directory and LDAP directories and lists integrations with Entra ID, DUO, Okta, Google, Ping Identity, and One Identity.Read 30 Sep 2026 · rcdevs.com
Federation and API
Listed integration features include SAML, OpenID Connect, OAuth2, Kerberos, an ADFS plugin, Windows login plugin, RPC-based management API, and SIEM integration.Read 30 Sep 2026 · rcdevs.com
Intended customers
RCDevs says it serves SMEs and large corporations across IT, finance, healthcare, and government sectors.Read 30 Sep 2026 · rcdevs.com
Legacy LDAP applications
The optional OpenOTP LDAP Bridge acts as a proxy to provide OTP login mechanisms for existing LDAP users and legacy applications.Read 30 Sep 2026 · rcdevs.com
Notable limits
The feature table marks LDAP Bridge OTP as currently unsupported in the listed editions and says SMS authentication requires SMS credits or an external SMS provider.Read 30 Sep 2026 · rcdevs.com
Platform plugins
RCDevs lists OpenOTP plugins for Windows login, Linux PAM, macOS PAM and login, ADFS, RDWeb Gateway, SimpleSAMLphp, and Nextcloud.Read 30 Sep 2026 · rcdevs.com
Security features
The feature list includes phishing protection, denial-of-service protection, intelligent geo-fencing, replay attack protection, leaked-password protection, and integrated PKI.Read 30 Sep 2026 · rcdevs.com
VPN and RADIUS
The OpenOTP RADIUS Bridge provides a RADIUS API over OpenOTP web services and supports enterprise VPN appliances and EAP for Wi-Fi or NAC authentication.Read 30 Sep 2026 · rcdevs.com

Plans and prices

Freeware Edition Price not published 25 users · 1 server Read 20 Sep 2026 · rcdevs.com
Enterprise Edition Price not published 250 users Read 20 Sep 2026 · rcdevs.com
Cloud Edition Price not published 250 users Read 20 Sep 2026 · rcdevs.com
On-Premise Freeware Free under 25 users · all features · one server · no HA · 365 days, renewable Read 30 Sep 2026 · rcdevs.com
On-Premise Trial Free all features · 2 active/active servers (HA) · 30 days · up to 10 users Read 30 Sep 2026 · rcdevs.com
SaaS Trial Free 30 days · up to 250 OpenOTP users · 50 SpanKey hosts Read 30 Sep 2026 · rcdevs.com
OpenOTP On-Premise Edition Priced on request Request a quote Read 30 Sep 2026 · shop.rcdevs.com

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