Open-source Imprivata alternatives

Keycloak is an open-source identity and access management server. It lets application teams add authentication and secure services without building their own login system, since Keycloak handles storing users and authenticating them. The project is written in Java, released under the Apache-2.0 license and governed under the Cloud Native Computing Foundation code of conduct.

Keycloak supports standard protocols such as OpenID Connect and SAML, and offers user federation, strong authentication, user management and fine-grained authorization. You can run it from the downloadable distribution using a start-dev command, or use the official Docker image published on Quay for containers and Kubernetes setups. The project provides documentation, a user mailing list and community channels for help, along with guidance for building and testing from source.

privacyIDEA is an open-source authentication server that manages multi-factor authentication for an organization. It issues and verifies second factors such as one-time passwords, hardware tokens, push notifications and FIDO2 or WebAuthn security keys, so applications and servers can add two-factor login without each building its own token handling.

The server is written in Python and exposes an API that other systems can call to check a login attempt. Its topics point to support for OTP, passkeys, push authentication and certificates, and administrators enroll and manage tokens centrally rather than configuring every service by hand. The project documentation includes how-tos for running it behind Apache2 with MySQL and for protecting a whole server farm.

privacyIDEA is released under the AGPL-3.0 licence and can be self-hosted, which keeps token data and user policies on infrastructure you control. The project website also lists an Enterprise Edition next to the community version, along with a demo site, screenshots and community resources for anyone evaluating it.