Ory is the largest open source community in the world for cloud software application security. We maintain advanced open source security software solving authentication, authorization, access control, application network security, and delegation. Ory implements a variety of industry and best-practice standards including OAuth 2.0 / OAuth 2.1, OpenID Connect, Zero Trust Networking, Google Zanzibar Policy Framework, FIDO2 U2F, WebAuthn, TOTP, and more.

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how was it again, OSS is only quarterly released now right?? where enterprise / SaaS is more frequent ?

OSS is typically once to twice a year. It will depend heavily on the features, issues, and general eco system. Enterprise and SaaS are updated at the least monthly.