Keycloak - Open Source Identity and Access Management for modern Applications and Services.
Rublon - Rublon enables your workforce to securely access your organization's networks, servers and applications via easy-to-use multi-factor authentication. Protect cloud apps, VPNs, servers, workstations, internal as well as on-premise apps.
DbProtect - Trustwave DbProtect is a highly scalable database security platform that helps organizations secure their relational databases and big data stores, both on premises and in the cloud.
DIGIPASS - DIGIPASS offers two-factor authentication solutions for mobile applications.
Okta - Enterprise-grade identity management for all your apps, users & devices
Google Authenticator - Google Authenticator is a multifactor app for mobile devices.